diff --git a/testing/mozbase/mozproxy/mozproxy/utils.py b/testing/mozbase/mozproxy/mozproxy/utils.py
index 3de7c4ac2bd8..57b9c0653d77 100644
--- a/testing/mozbase/mozproxy/mozproxy/utils.py
+++ b/testing/mozbase/mozproxy/mozproxy/utils.py
@@ -98,7 +98,7 @@ def tooltool_download(manifest, run_local, raptor_dir):
             )
             if x is not None
         )
-        
+
         command = [
             sys.executable,
             tooltool_path,