diff --git a/src/NmeaParser.Shared/Nmea/Gps/GPGGA.cs b/src/NmeaParser.Shared/Nmea/Gps/GPGGA.cs
index 2ea969a..95a510f 100644
--- a/src/NmeaParser.Shared/Nmea/Gps/GPGGA.cs
+++ b/src/NmeaParser.Shared/Nmea/Gps/GPGGA.cs
@@ -1,4 +1,20 @@
-using System;
+//
+// Copyright (c) 2014 Morten Nielsen
+//
+// Licensed under the Microsoft Public License (Ms-PL) (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://opensource.org/licenses/Ms-PL.html
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
diff --git a/src/NmeaParser.Shared/Nmea/Gps/GPRMC.cs b/src/NmeaParser.Shared/Nmea/Gps/GPRMC.cs
index e66234e..943f9a6 100644
--- a/src/NmeaParser.Shared/Nmea/Gps/GPRMC.cs
+++ b/src/NmeaParser.Shared/Nmea/Gps/GPRMC.cs
@@ -1,4 +1,20 @@
-using System;
+//
+// Copyright (c) 2014 Morten Nielsen
+//
+// Licensed under the Microsoft Public License (Ms-PL) (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://opensource.org/licenses/Ms-PL.html
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
diff --git a/src/NmeaParser.Shared/Nmea/LaserRangeMessage.cs b/src/NmeaParser.Shared/Nmea/LaserRangeMessage.cs
index 39766fd..5df33de 100644
--- a/src/NmeaParser.Shared/Nmea/LaserRangeMessage.cs
+++ b/src/NmeaParser.Shared/Nmea/LaserRangeMessage.cs
@@ -1,4 +1,20 @@
-using System;
+//
+// Copyright (c) 2014 Morten Nielsen
+//
+// Licensed under the Microsoft Public License (Ms-PL) (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://opensource.org/licenses/Ms-PL.html
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
diff --git a/src/NmeaParser.Shared/Nmea/LaserTech/LaserRange/PLTIT.cs b/src/NmeaParser.Shared/Nmea/LaserTech/LaserRange/PLTIT.cs
index 8b4f362..c76e591 100644
--- a/src/NmeaParser.Shared/Nmea/LaserTech/LaserRange/PLTIT.cs
+++ b/src/NmeaParser.Shared/Nmea/LaserTech/LaserRange/PLTIT.cs
@@ -1,4 +1,20 @@
-using System;
+//
+// Copyright (c) 2014 Morten Nielsen
+//
+// Licensed under the Microsoft Public License (Ms-PL) (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://opensource.org/licenses/Ms-PL.html
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
diff --git a/src/NmeaParser.Shared/Nmea/NmeaMessage.cs b/src/NmeaParser.Shared/Nmea/NmeaMessage.cs
index 1027ef1..ebe4e7c 100644
--- a/src/NmeaParser.Shared/Nmea/NmeaMessage.cs
+++ b/src/NmeaParser.Shared/Nmea/NmeaMessage.cs
@@ -1,4 +1,20 @@
-using System;
+//
+// Copyright (c) 2014 Morten Nielsen
+//
+// Licensed under the Microsoft Public License (Ms-PL) (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://opensource.org/licenses/Ms-PL.html
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Reflection;
diff --git a/src/NmeaParser.Shared/Nmea/Trimble/LaserRange/PTNLA.cs b/src/NmeaParser.Shared/Nmea/Trimble/LaserRange/PTNLA.cs
index ece44b1..03d9da8 100644
--- a/src/NmeaParser.Shared/Nmea/Trimble/LaserRange/PTNLA.cs
+++ b/src/NmeaParser.Shared/Nmea/Trimble/LaserRange/PTNLA.cs
@@ -1,4 +1,20 @@
-using System;
+//
+// Copyright (c) 2014 Morten Nielsen
+//
+// Licensed under the Microsoft Public License (Ms-PL) (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://opensource.org/licenses/Ms-PL.html
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
diff --git a/src/NmeaParser.Shared/Nmea/Trimble/LaserRange/PTNLB.cs b/src/NmeaParser.Shared/Nmea/Trimble/LaserRange/PTNLB.cs
index e4c34af..fdd6eea 100644
--- a/src/NmeaParser.Shared/Nmea/Trimble/LaserRange/PTNLB.cs
+++ b/src/NmeaParser.Shared/Nmea/Trimble/LaserRange/PTNLB.cs
@@ -1,4 +1,20 @@
-using System;
+//
+// Copyright (c) 2014 Morten Nielsen
+//
+// Licensed under the Microsoft Public License (Ms-PL) (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://opensource.org/licenses/Ms-PL.html
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Linq;
diff --git a/src/NmeaParser.Shared/Nmea/UnknownMessage.cs b/src/NmeaParser.Shared/Nmea/UnknownMessage.cs
index ce68ddb..137fcb8 100644
--- a/src/NmeaParser.Shared/Nmea/UnknownMessage.cs
+++ b/src/NmeaParser.Shared/Nmea/UnknownMessage.cs
@@ -1,4 +1,20 @@
-using System;
+//
+// Copyright (c) 2014 Morten Nielsen
+//
+// Licensed under the Microsoft Public License (Ms-PL) (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://opensource.org/licenses/Ms-PL.html
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
diff --git a/src/NmeaParser.Shared/NmeaDevice.cs b/src/NmeaParser.Shared/NmeaDevice.cs
index d7e84cf..1050115 100644
--- a/src/NmeaParser.Shared/NmeaDevice.cs
+++ b/src/NmeaParser.Shared/NmeaDevice.cs
@@ -1,4 +1,20 @@
-using System;
+//
+// Copyright (c) 2014 Morten Nielsen
+//
+// Licensed under the Microsoft Public License (Ms-PL) (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://opensource.org/licenses/Ms-PL.html
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
diff --git a/src/NmeaParser.Shared/NmeaFileDevice.cs b/src/NmeaParser.Shared/NmeaFileDevice.cs
index 2adac80..d3906dc 100644
--- a/src/NmeaParser.Shared/NmeaFileDevice.cs
+++ b/src/NmeaParser.Shared/NmeaFileDevice.cs
@@ -1,4 +1,18 @@
-using System;
+//
+// Copyright (c) 2014 Morten Nielsen
+//
+// Licensed under the Microsoft Public License (Ms-PL) (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://opensource.org/licenses/Ms-PL.html
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
diff --git a/src/NmeaParser.Shared/StreamDevice.cs b/src/NmeaParser.Shared/StreamDevice.cs
index 3c0a7f1..7e211ea 100644
--- a/src/NmeaParser.Shared/StreamDevice.cs
+++ b/src/NmeaParser.Shared/StreamDevice.cs
@@ -1,4 +1,20 @@
-using System;
+//
+// Copyright (c) 2014 Morten Nielsen
+//
+// Licensed under the Microsoft Public License (Ms-PL) (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://opensource.org/licenses/Ms-PL.html
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+ using System;
 using System.IO;
 using System.Collections.Generic;
 using System.Text;
diff --git a/src/NmeaParser.Tests/NmeaMessages.cs b/src/NmeaParser.Tests/NmeaMessages.cs
index 8e17c73..14497ce 100644
--- a/src/NmeaParser.Tests/NmeaMessages.cs
+++ b/src/NmeaParser.Tests/NmeaMessages.cs
@@ -1,4 +1,20 @@
-using System;
+//
+// Copyright (c) 2014 Morten Nielsen
+//
+// Licensed under the Microsoft Public License (Ms-PL) (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://opensource.org/licenses/Ms-PL.html
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
diff --git a/src/NmeaParser.WinDesktop/SerialPortDevice.cs b/src/NmeaParser.WinDesktop/SerialPortDevice.cs
index 6d7074f..3f810a3 100644
--- a/src/NmeaParser.WinDesktop/SerialPortDevice.cs
+++ b/src/NmeaParser.WinDesktop/SerialPortDevice.cs
@@ -1,4 +1,20 @@
-using System;
+//
+// Copyright (c) 2014 Morten Nielsen
+//
+// Licensed under the Microsoft Public License (Ms-PL) (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://opensource.org/licenses/Ms-PL.html
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
diff --git a/src/NmeaParser.WinDesktop/TypedEventHandler.cs b/src/NmeaParser.WinDesktop/TypedEventHandler.cs
index d7585d2..fd6dd29 100644
--- a/src/NmeaParser.WinDesktop/TypedEventHandler.cs
+++ b/src/NmeaParser.WinDesktop/TypedEventHandler.cs
@@ -1,4 +1,20 @@
-using System;
+//
+// Copyright (c) 2014 Morten Nielsen
+//
+// Licensed under the Microsoft Public License (Ms-PL) (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://opensource.org/licenses/Ms-PL.html
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
diff --git a/src/NmeaParser.WinStore/BluetoothDevice.cs b/src/NmeaParser.WinStore/BluetoothDevice.cs
index 5d04710..a083a4e 100644
--- a/src/NmeaParser.WinStore/BluetoothDevice.cs
+++ b/src/NmeaParser.WinStore/BluetoothDevice.cs
@@ -1,4 +1,20 @@
-using System;
+//
+// Copyright (c) 2014 Morten Nielsen
+//
+// Licensed under the Microsoft Public License (Ms-PL) (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://opensource.org/licenses/Ms-PL.html
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;