diff --git a/src/ifcwrap/CMakeLists.txt b/src/ifcwrap/CMakeLists.txt
index d4463e5a4f..86ad0c1ace 100644
--- a/src/ifcwrap/CMakeLists.txt
+++ b/src/ifcwrap/CMakeLists.txt
@@ -83,7 +83,10 @@ IF(PYTHONINTERP_FOUND AND NOT "${PYTHON_EXECUTABLE}" STREQUAL "")
     IF("${python_package_dir}" STREQUAL "")
         MESSAGE(WARNING "Unable to locate Python site-package directory, unable to install the Python wrapper")
     ELSE()
-        FILE(GLOB_RECURSE sourcefiles "${CMAKE_CURRENT_SOURCE_DIR}/../ifcopenshell-python/ifcopenshell/*.py")
+        FILE(GLOB_RECURSE sourcefiles 
+            "${CMAKE_CURRENT_SOURCE_DIR}/../ifcopenshell-python/ifcopenshell/*.py"
+            "${CMAKE_CURRENT_SOURCE_DIR}/../ifcopenshell-python/ifcopenshell/*.bnf"
+        )
         FOREACH(file ${sourcefiles})
             FILE(RELATIVE_PATH relative "${CMAKE_CURRENT_SOURCE_DIR}/../ifcopenshell-python/ifcopenshell/" "${file}")
             GET_FILENAME_COMPONENT(dir "${relative}" DIRECTORY)