diff --git a/CMakeLists.txt b/CMakeLists.txt
index bba763301eaeafb3ba79f4ce7e5e6c0e54510b7b..1b79693cb344ba9cc0fce64fbcc3809bee6fc864 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -29,7 +29,6 @@ set (NETT_LIBRARY_DEBUG "" CACHE FILEPATH "The nett debug library to link agains
 
 set( ZMQ_LIBRARY "" CACHE FILEPATH "The zmq library to link against" )
 
-include( "include/nett-python/_SourceFiles.cmake" )
 include( "src/nett-python/_SourceFiles.cmake" )
 
 include_directories (${NETT_INCLUDE_DIR})