diff --git a/web/assets/js/model/inbound.js b/web/assets/js/model/inbound.js
index ed72f8f6..d0060fb4 100644
--- a/web/assets/js/model/inbound.js
+++ b/web/assets/js/model/inbound.js
@@ -1827,7 +1827,7 @@ class Inbound extends XrayCommonClass {
         if (this.stream.tls.settings.fingerprint?.length > 0) params.set("fp", this.stream.tls.settings.fingerprint);
         if (this.stream.tls.alpn?.length > 0) params.set("alpn", this.stream.tls.alpn);
         if (this.stream.tls.settings.allowInsecure) params.set("insecure", "1");
-        if (this.stream.tls.settings.echConfigList?.length > 0) params.set("ech", this.stream.tls.settings.echConfigList.join(','));
+        if (this.stream.tls.settings.echConfigList?.length > 0) params.set("ech", this.stream.tls.settings.echConfigList);
         if (this.stream.tls.sni?.length > 0) params.set("sni", this.stream.tls.sni);
 
         const udpMasks = this.stream?.finalmask?.udp;