diff --git a/cmd/zoekt-indexserver/config.go b/cmd/zoekt-indexserver/config.go
index 26f4d1073..0a8bc3662 100644
--- a/cmd/zoekt-indexserver/config.go
+++ b/cmd/zoekt-indexserver/config.go
@@ -261,7 +261,7 @@ func executeMirror(cfg []ConfigEntry, repoDir string, pendingRepos chan<- string
 			}
 			cmd.Args = append(cmd.Args, c.GerritApiURL)
 		} else {
-			log.Printf("executeMirror: ignoring config, because it does not contain any valid repository definition: %q", c)
+			log.Printf("executeMirror: ignoring config, because it does not contain any valid repository definition: %v", c)
 			continue
 		}