diff --git a/v2rayN/v2rayN/Handler/ConfigHandler.cs b/v2rayN/v2rayN/Handler/ConfigHandler.cs
index c9770c5a..169ff861 100644
--- a/v2rayN/v2rayN/Handler/ConfigHandler.cs
+++ b/v2rayN/v2rayN/Handler/ConfigHandler.cs
@@ -369,6 +369,10 @@ namespace v2rayN.Handler
             {
                 return -1;
             }
+            if (profileItem.id.IsNullOrEmpty())
+            {
+                return -1;
+            }
 
             AddServerCommon(ref config, profileItem, toFile);
 
@@ -636,6 +640,10 @@ namespace v2rayN.Handler
             {
                 return -1;
             }
+            if (profileItem.id.IsNullOrEmpty())
+            {
+                return -1;
+            }
 
             AddServerCommon(ref config, profileItem, toFile);
 
@@ -675,6 +683,10 @@ namespace v2rayN.Handler
             {
                 profileItem.streamSecurity = Global.StreamSecurity;
             }
+            if (profileItem.id.IsNullOrEmpty())
+            {
+                return -1;
+            }
 
             AddServerCommon(ref config, profileItem, toFile);
 
@@ -800,6 +812,10 @@ namespace v2rayN.Handler
             {
                 profileItem.flow = Global.flows.First();
             }
+            if (profileItem.id.IsNullOrEmpty())
+            {
+                return -1;
+            }
 
             AddServerCommon(ref config, profileItem, toFile);