diff --git a/v2rayN/v2rayN/Handler/ConfigHandler.cs b/v2rayN/v2rayN/Handler/ConfigHandler.cs
index f817b746..c35024b2 100644
--- a/v2rayN/v2rayN/Handler/ConfigHandler.cs
+++ b/v2rayN/v2rayN/Handler/ConfigHandler.cs
@@ -832,7 +832,7 @@ namespace v2rayN.Handler
                 }
                 if (Utils.IsNullOrEmpty(profileItem.fingerprint))
                 {
-                    profileItem.fingerprint = config.coreBasicItem.defFingerprint.ToString().ToLower();
+                    profileItem.fingerprint = config.coreBasicItem.defFingerprint;
                 }
             }