diff --git a/openage/cabextract/CMakeLists.txt b/openage/cabextract/CMakeLists.txt
index 9a545259af..87f4fd36eb 100644
--- a/openage/cabextract/CMakeLists.txt
+++ b/openage/cabextract/CMakeLists.txt
@@ -1,6 +1,6 @@
 add_cython_modules(
 	lzxd.pyx
-	STANDALONE cabchecksum.pyx
+	cabchecksum.pyx
 )
 
 add_py_modules(