diff --git a/pkg/webserver/nginx/proxy.go b/pkg/webserver/nginx/proxy.go
index 2920b370..7f5d5143 100644
--- a/pkg/webserver/nginx/proxy.go
+++ b/pkg/webserver/nginx/proxy.go
@@ -226,7 +226,7 @@ func generateProxyConfig(proxy types.Proxy) string {
 	}
 
 	sb.WriteString(fmt.Sprintf("    proxy_pass %s;\n", proxy.Pass))
-	sb.WriteString(fmt.Sprintf("    proxy_http_version 2;\n"))
+	sb.WriteString("    proxy_http_version 2;\n")
 
 	// Host 头
 	if proxy.Host != "" {