diff --git a/server/gitea/client.go b/server/gitea/client.go
index bf19d32..3af58fa 100644
--- a/server/gitea/client.go
+++ b/server/gitea/client.go
@@ -257,7 +257,7 @@ func (client *Client) GiteaGetRepoBranchTimestamp(repoOwner, repoName, branchNam
 			log.Trace().Msgf("[cache] set cache branch %q not found", branchName)
 			jsonToCache, err := json.Marshal(BranchTimestamp{NotFound: true})
 			if err != nil {
-				log.Error().Err(err).Msgf("[cache] marshaling empty timestamp has returned an error", cacheKey)
+				log.Error().Err(err).Msgf("[cache] marshaling empty timestamp for '%s' has returned an error", cacheKey)
 			}
 			if err := client.responseCache.Set(cacheKey, jsonToCache, branchExistenceCacheTimeout); err != nil {
 				log.Error().Err(err).Msg("[cache] error on cache write")