diff --git a/src/Handler/Utils/Submission.hs b/src/Handler/Utils/Submission.hs
index 2fbfb5532..6b591928f 100644
--- a/src/Handler/Utils/Submission.hs
+++ b/src/Handler/Utils/Submission.hs
@@ -235,8 +235,9 @@ extractRatingsMsg = do
   ignored' <- filterSubmission `fuseUpstream` Rating.extractRatings
   let ignored :: Set (Either CryptoFileNameSubmission FilePath)
       ignored = Right `Set.map` ignored'
-  mr <- (toHtml . ) <$> getMessageRender
-  addMessage "warning" =<< withUrlRenderer ($(ihamletFile "templates/messages/submissionFilesIgnored.hamlet") mr)
+  unless (null ignored) $ do
+    mr <- (toHtml . ) <$> getMessageRender
+    addMessage "warning" =<< withUrlRenderer ($(ihamletFile "templates/messages/submissionFilesIgnored.hamlet") mr)
 
 sinkSubmission :: UserId
                -> Either SheetId SubmissionId