diff --git a/scripts/xcpng-fs-diff.py b/scripts/xcpng-fs-diff.py
index 1ded9a2a4..6ab551f90 100755
--- a/scripts/xcpng-fs-diff.py
+++ b/scripts/xcpng-fs-diff.py
@@ -296,6 +296,9 @@ def main():
             save_reference_files(ref_files, args.save_ref)
 
     if ref_files is None or args.test_host is None:
+        if args.save_ref:
+            return 0
+
         print("\nMissing parameters. Try --help", file=sys.stderr)
         return -1