diff --git a/CMakeExternals/Customization/ITK.cmake b/CMakeExternals/Customization/ITK.cmake
index 9931915..ea8320b 100644
--- a/CMakeExternals/Customization/ITK.cmake
+++ b/CMakeExternals/Customization/ITK.cmake
@@ -1,21 +1,21 @@
 #[[ Customize MITK's external projects. This feature is supported only
     rudimentary and not all of MITK's external projects may take these
     customizations into account.
 
     The file's name must be equal to the external project's name. It may
-    contain the following four variables:
+    contain the following three variables:
 
       - CUSTOM_CMAKE_ARGS
       - CUSTOM_CMAKE_CACHE_ARGS
       - CUSTOM_CMAKE_DEFAULT_CACHE_ARGS
 
     You can lookup the meaning of these variables without the CUSTOM_ prefix
     in the official CMake documentation. The custom variables are simply added
     to the respective variables of the external project. ]]
 
 set(CUSTOM_CMAKE_ARGS
   -DModule_TextureFeatures:BOOL=ON
   -DModule_RLEImage:BOOL=ON
   -DModule_IsotropicWavelets:BOOL=ON
   -DModule_PrincipalComponentsAnalysis:BOOL=ON
 )