diff --git a/Annex/Content.hs b/Annex/Content.hs
index 6a028d901d..c3766c0abc 100644
--- a/Annex/Content.hs
+++ b/Annex/Content.hs
@@ -449,7 +449,7 @@ checkSecureHashes' :: Key -> Annex Bool
 checkSecureHashes' key = checkSecureHashes key >>= \case
 	Nothing -> return True
 	Just msg -> do
-		warning $ UnquotedString $ msg ++ "to annex objects"
+		warning $ UnquotedString $ msg ++ " to annex objects"
 		return False
 
 data LinkAnnexResult = LinkAnnexOk | LinkAnnexFailed | LinkAnnexNoop