diff --git a/src/sdlan_util.erl b/src/sdlan_util.erl
index 6d12a45..d49397f 100644
--- a/src/sdlan_util.erl
+++ b/src/sdlan_util.erl
@@ -173,7 +173,11 @@ certificate_config() ->
     {ok, Props} = application:get_env(sdlan, certificate),
     CertFile = proplists:get_value(certfile, Props),
     KeyFile = proplists:get_value(keyfile, Props),
+
     %% 获取环境变量
-    Path = os:getenv("QUIC_CERT_PATH"),
-    % 必选：QUIC/TLS证书配置
-    {Path ++ "/" ++ CertFile, Path ++ "/" ++  KeyFile}.
\ No newline at end of file
+    case os:getenv("QUIC_CERT_PATH") of
+        false ->
+            {CertFile, KeyFile};
+        Path ->
+            {Path ++ "/" ++ CertFile, Path ++ "/" ++  KeyFile}
+    end.
\ No newline at end of file