diff --git a/gui/INSTALL.md b/gui/INSTALL.md
index 5ef065d..cc54260 100644
--- a/gui/INSTALL.md
+++ b/gui/INSTALL.md
@@ -27,15 +27,15 @@ from the command line) then you need only the first.
   Scyther does not support Python 3. You are therefore recommended to
   choose the latest production release of Python 2, e.g., Python 2.7.
 
-  * 	Mac OS X:
+  *	Mac OS X:
   
-    	If the package yields an error when you try to install it,
-    	please use the following, in the directory where you downloaded
-    	it:
-    	
-    	```
-    	 $ sudo installer -pkg graphviz-2.34.0.pkg -target /
-    	```
+  	If the package yields an error when you try to install it,
+  	please use the following, in the directory where you downloaded
+  	it:
+  	
+  	```
+  	 $ sudo installer -pkg graphviz-2.34.0.pkg -target /
+  	```
 
 
 3. wxPython libraries.
@@ -51,24 +51,24 @@ from the command line) then you need only the first.
   As of writing (May 2013) the following links lead to the appropriate
   wxPython packages for Python 2.7:
 
-  * 	Windows:
+  *	Windows:
   
-    	http://downloads.sourceforge.net/wxpython/wxPython2.8-win32-unicode-2.8.12.1-py27.exe
+  	http://downloads.sourceforge.net/wxpython/wxPython2.8-win32-unicode-2.8.12.1-py27.exe
 
-  * 	Mac OS X:
+  *	Mac OS X:
   
-    	http://downloads.sourceforge.net/wxpython/wxPython2.8-osx-unicode-2.8.12.1-universal-py2.7.dmg
+  	http://downloads.sourceforge.net/wxpython/wxPython2.8-osx-unicode-2.8.12.1-universal-py2.7.dmg
 
-    	Note that this package is in an old format and you will probably
-    	get a warning "Package is damaged". This can be resolved by:
-    	
-    	```
-    	 $ sudo installer -pkg /Volume/.../wxPython2.8-osx-unicode-universal-py2.7.pkg/ -target /
-    	```
+  	Note that this package is in an old format and you will probably
+  	get a warning "Package is damaged". This can be resolved by:
+  	
+  	```
+  	 $ sudo installer -pkg /Volume/.../wxPython2.8-osx-unicode-universal-py2.7.pkg/ -target /
+  	```
 
-  * 	Ubuntu/Debian Linux:
+  *	Ubuntu/Debian Linux:
   
-    	http://wiki.wxpython.org/InstallingOnUbuntuOrDebian
+  	http://wiki.wxpython.org/InstallingOnUbuntuOrDebian
 
 
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