diff --git a/asllib/doc/doclint.py b/asllib/doc/doclint.py
index a3a62e9da..0b8eaf879 100644
--- a/asllib/doc/doclint.py
+++ b/asllib/doc/doclint.py
@@ -70,8 +70,8 @@ def main():
     num_errors += check_undefined_references_and_multiply_defined_labels()
 
     print(f"There were {num_errors} errors!", file=sys.stderr)
-    #if num_errors > 0:
-    #    sys.exit(1)
+    if num_errors > 0:
+       sys.exit(1)
 
 if __name__ == "__main__":
     main()