diff --git a/admin.proto b/admin.proto
index 7d2713f..79a6687 100644
--- a/admin.proto
+++ b/admin.proto
@@ -3,6 +3,7 @@ syntax = "proto3";
 option java_package = "com.geeksville.mesh";
 option optimize_for = LITE_RUNTIME;
 option go_package = "github.com/meshtastic/go/generated";
+option csharp_namespace = "Meshtastic.Protobufs";
 
 import "channel.proto";
 import "config.proto";
diff --git a/apponly.proto b/apponly.proto
index 4e4262a..be58039 100644
--- a/apponly.proto
+++ b/apponly.proto
@@ -3,6 +3,7 @@ syntax = "proto3";
 option java_package = "com.geeksville.mesh";
 option optimize_for = LITE_RUNTIME;
 option go_package = "github.com/meshtastic/go/generated";
+option csharp_namespace = "Meshtastic.Protobufs";
 
 import "channel.proto";
 import "config.proto";
diff --git a/cannedmessages.proto b/cannedmessages.proto
index 7f1f366..e0ea3d9 100644
--- a/cannedmessages.proto
+++ b/cannedmessages.proto
@@ -4,6 +4,7 @@ option java_package = "com.geeksville.mesh";
 option java_outer_classname = "CannedMessageConfigProtos";
 option optimize_for = LITE_RUNTIME;
 option go_package = "github.com/meshtastic/go/generated";
+option csharp_namespace = "Meshtastic.Protobufs";
 
 /*
  * Canned message module configuration.
diff --git a/channel.proto b/channel.proto
index ea2a23b..18ef287 100644
--- a/channel.proto
+++ b/channel.proto
@@ -6,6 +6,7 @@ option optimize_for = LITE_RUNTIME;
 option go_package = "github.com/meshtastic/go/generated";
 
 option java_outer_classname = "ChannelProtos";
+option csharp_namespace = "Meshtastic.Protobufs";
 
 /*
  * Full settings (center freq, spread factor, pre-shared secret key etc...)
diff --git a/config.proto b/config.proto
index 3468605..bfeb7a7 100644
--- a/config.proto
+++ b/config.proto
@@ -4,6 +4,7 @@ option java_package = "com.geeksville.mesh";
 option java_outer_classname = "ConfigProtos";
 option optimize_for = LITE_RUNTIME;
 option go_package = "github.com/meshtastic/go/generated";
+option csharp_namespace = "Meshtastic.Protobufs";
 
 message Config {
   /*
diff --git a/device_metadata.proto b/device_metadata.proto
index fd1bf47..ee73d83 100644
--- a/device_metadata.proto
+++ b/device_metadata.proto
@@ -5,6 +5,7 @@ option optimize_for = LITE_RUNTIME;
 option go_package = "github.com/meshtastic/go/generated";
 
 option java_outer_classname = "DeviceMetadataProtos";
+option csharp_namespace = "Meshtastic.Protobufs";
 
 /*
  * Device metadata response 
diff --git a/deviceonly.proto b/deviceonly.proto
index b4e0c1d..a7e1f0d 100644
--- a/deviceonly.proto
+++ b/deviceonly.proto
@@ -8,6 +8,7 @@ import "channel.proto";
 import "mesh.proto";
 
 option java_outer_classname = "DeviceOnly";
+option csharp_namespace = "Meshtastic.Protobufs";
 
 /*
  * This message is never sent over the wire, but it is used for serializing DB
diff --git a/localonly.proto b/localonly.proto
index cc77c3d..f4c1859 100644
--- a/localonly.proto
+++ b/localonly.proto
@@ -8,6 +8,7 @@ import "config.proto";
 import "module_config.proto";
 
 option java_outer_classname = "LocalOnlyProtos";
+option csharp_namespace = "Meshtastic.Protobufs";
 
 /*
  * Protobuf structures common to apponly.proto and deviceonly.proto
diff --git a/mesh.proto b/mesh.proto
index 68f95ab..89bc5fe 100644
--- a/mesh.proto
+++ b/mesh.proto
@@ -11,6 +11,7 @@ import "portnums.proto";
 import "telemetry.proto";
 
 option java_outer_classname = "MeshProtos";
+option csharp_namespace = "Meshtastic.Protobufs";
 
 /*
  * a gps position
diff --git a/module_config.proto b/module_config.proto
index 93c7ae1..5a363b9 100644
--- a/module_config.proto
+++ b/module_config.proto
@@ -4,6 +4,7 @@ option java_package = "com.geeksville.mesh";
 option java_outer_classname = "ModuleConfigProtos";
 option optimize_for = LITE_RUNTIME;
 option go_package = "github.com/meshtastic/go/generated";
+option csharp_namespace = "Meshtastic.Protobufs";
 
 /*
  * Module Config
diff --git a/mqtt.proto b/mqtt.proto
index 4045b1a..9b491e7 100644
--- a/mqtt.proto
+++ b/mqtt.proto
@@ -7,6 +7,7 @@ option go_package = "github.com/meshtastic/go/generated";
 import "mesh.proto";
 
 option java_outer_classname = "MQTTProtos";
+option csharp_namespace = "Meshtastic.Protobufs";
 
 /*
  * This message wraps a MeshPacket with extra metadata about the sender and how it arrived.
diff --git a/portnums.proto b/portnums.proto
index ab806ad..4b0ddf4 100644
--- a/portnums.proto
+++ b/portnums.proto
@@ -4,6 +4,7 @@ option java_package = "com.geeksville.mesh";
 option java_outer_classname = "Portnums";
 option optimize_for = LITE_RUNTIME;
 option go_package = "github.com/meshtastic/go/generated";
+option csharp_namespace = "Meshtastic.Protobufs";
 
 /*
  * For any new 'apps' that run on the device or via sister apps on phones/PCs they should pick and use a
diff --git a/remote_hardware.proto b/remote_hardware.proto
index d5cca42..3340a31 100644
--- a/remote_hardware.proto
+++ b/remote_hardware.proto
@@ -4,6 +4,7 @@ option java_package = "com.geeksville.mesh";
 option java_outer_classname = "RemoteHardware";
 option optimize_for = LITE_RUNTIME;
 option go_package = "github.com/meshtastic/go/generated";
+option csharp_namespace = "Meshtastic.Protobufs";
 
 /*
  * An example app to show off the module system. This message is used for
diff --git a/storeforward.proto b/storeforward.proto
index 45d163a..7938b64 100644
--- a/storeforward.proto
+++ b/storeforward.proto
@@ -4,6 +4,7 @@ option java_package = "com.geeksville.mesh";
 option java_outer_classname = "StoreAndForwardProtos";
 option optimize_for = LITE_RUNTIME;
 option go_package = "github.com/meshtastic/go/generated";
+option csharp_namespace = "Meshtastic.Protobufs";
 
 /*
  * TODO: REPLACE
diff --git a/telemetry.proto b/telemetry.proto
index d87d13e..4234a8f 100644
--- a/telemetry.proto
+++ b/telemetry.proto
@@ -5,6 +5,7 @@ option optimize_for = LITE_RUNTIME;
 option go_package = "github.com/meshtastic/go/generated";
 
 option java_outer_classname = "TelemetryProtos";
+option csharp_namespace = "Meshtastic.Protobufs";
 
 /*
  * Key native device metrics such as battery level