diff --git a/umdp3_fixer/rosestem_branch_checker.py b/umdp3_fixer/rosestem_branch_checker.py
index 90c9bcc9..d092fa46 100755
--- a/umdp3_fixer/rosestem_branch_checker.py
+++ b/umdp3_fixer/rosestem_branch_checker.py
@@ -93,8 +93,7 @@ def diff_cwd_working(model_source, path, saved_umask, tmpdir):
         os.umask(saved_umask)
         shutil.rmtree(tmpdir)
         raise ValueError(
-            "Ran fcm diff command and changes were made by "
-            + "the umdp3_fixer.py script."
+            "Ran diff command and changes were made by " + "the umdp3_fixer.py script."
         )
 
     return