diff --git a/modules/storage/obs.go b/modules/storage/obs.go
index d1bbb626f..9137d5c1d 100755
--- a/modules/storage/obs.go
+++ b/modules/storage/obs.go
@@ -293,8 +293,8 @@ func GetAllObsListObjectUnderDir(bucket string, prefix string) ([]FileInfo, erro
 			if val.Key == prefix {
 				continue
 			}
-			log.Info("sub str=" + val.Key[prefixLen:])
-			if strings.Contains(val.Key[prefixLen:], "/") {
+			log.Info("sub str=" + val.Key[prefixLen:len(val.Key)-1])
+			if strings.Contains(val.Key[prefixLen:len(val.Key)-1], "/") {
 				continue
 			}
 			if strings.HasSuffix(val.Key, "/") {