diff --git a/app/src/main/java/io/nekohasekai/sagernet/fmt/v2ray/V2RayFmt.kt b/app/src/main/java/io/nekohasekai/sagernet/fmt/v2ray/V2RayFmt.kt
index 1007258..eea3698 100644
--- a/app/src/main/java/io/nekohasekai/sagernet/fmt/v2ray/V2RayFmt.kt
+++ b/app/src/main/java/io/nekohasekai/sagernet/fmt/v2ray/V2RayFmt.kt
@@ -620,10 +620,14 @@ fun buildSingBoxOutboundTLS(bean: StandardV2RayBean): OutboundTLSOptions? {
             }
         }
         if (bean.enableECH) {
-            ech.enabled = true
-            ech.pq_signature_schemes_enabled = bean.enablePqSignature
-            ech.dynamic_record_sizing_disabled = bean.disabledDRS
-            ech.config = bean.echConfig.lines()
+            ech = OutboundECHOptions().apply {
+                enabled = true
+                pq_signature_schemes_enabled = bean.enablePqSignature
+                dynamic_record_sizing_disabled = bean.disabledDRS
+                if (bean.echConfig.isNotBlank()) {
+                    config = bean.echConfig.lines()
+                }
+            }
         }
     }
 }