diff --git a/source/http/source.go b/source/http/source.go
index f2db01c8d..7c026c4ce 100644
--- a/source/http/source.go
+++ b/source/http/source.go
@@ -169,7 +169,7 @@ func (hs *httpSourceHandler) CacheKey(ctx context.Context, g session.Group, inde
 
 	uh, err := hs.urlHash()
 	if err != nil {
-		return "", "", nil, false, nil
+		return "", "", nil, false, err
 	}
 
 	// look up metadata(previously stored headers) for that URL