diff --git a/Using-OpenWebRX-with-an-AirSpyHF-(IW0HDV-version).md b/Using-OpenWebRX-with-an-AirSpyHF-(IW0HDV-version).md
index d550444..0252172 100644
--- a/Using-OpenWebRX-with-an-AirSpyHF-(IW0HDV-version).md
+++ b/Using-OpenWebRX-with-an-AirSpyHF-(IW0HDV-version).md
@@ -1,24 +1,25 @@
 The following instructions assume that you are using Ubuntu 14.04 or later.
 
 ## Install prerequisite
-sudo apt-get install build-essential git libfftw3-dev cmake libusb-1.0-0-dev
+    sudo apt-get install build-essential git libfftw3-dev cmake libusb-1.0-0-dev
 
 ## Build and install libairspyhf
-cd ~/
-git clone https://github.com/IW0HDV/airspyhf.git -b tools
-cd airspyhf/
-mkdir build
-cd build
-cmake ../ -DINSTALL_UDEV_RULES=ON
-make
-sudo make install
-sudo ldconfig
+    cd ~/
+    git clone https://github.com/IW0HDV/airspyhf.git -b tools
+    cd airspyhf/
+    mkdir build
+    cd build
+    cmake ../ -DINSTALL_UDEV_RULES=ON
+    make
+    sudo make install
+    sudo ldconfig
+
 
 ## Download, build and install csdr library (which is a dependency of OpenWebRX) 
-git clone https://github.com/simonyiszk/csdr.git
-cd ~/csdr
-make
-sudo make install
+    git clone https://github.com/simonyiszk/csdr.git
+    cd ~/csdr
+    make
+    sudo make install
 
 
 ## Install OpenWebRx