diff --git a/scripts/generate_build_vars.py b/scripts/generate_build_vars.py
index f0602cc..8a9ebbf 100644
--- a/scripts/generate_build_vars.py
+++ b/scripts/generate_build_vars.py
@@ -19,4 +19,4 @@ def main():
 
 
 if __name__ == "__main__":
-    sys.exit()
+    sys.exit(main())