diff --git a/src/ifcwrap/CMakeLists.txt b/src/ifcwrap/CMakeLists.txt
index 8ac37dba36..d20503fa27 100644
--- a/src/ifcwrap/CMakeLists.txt
+++ b/src/ifcwrap/CMakeLists.txt
@@ -47,7 +47,7 @@ IF(NOT PYTHONLIBS_FOUND OR "$PYTHON_INCLUDE_DIRS}" STREQUAL "")
 ENDIF()
 
 INCLUDE_DIRECTORIES(${PYTHON_INCLUDE_DIRS})
-INCLUDE_DIRECTORIES(${CMAKE_CURRENT_SOURCE_DIR})
+INCLUDE_DIRECTORIES(BEFORE ${CMAKE_CURRENT_SOURCE_DIR})
 
 SET(CMAKE_SWIG_FLAGS ${SWIG_DEFINES})
 # NOTE Workaround for most likely missing debug Python libraries on Windows (requires Python built from the source).