diff --git a/src/lib/plugins/commands.js b/src/lib/plugins/commands.js
index 835807c..448ae60 100644
--- a/src/lib/plugins/commands.js
+++ b/src/lib/plugins/commands.js
@@ -115,7 +115,7 @@ module.exports.player=function(player, serv) {
       if (res) player.chat(serv.color.red + res);
     }
     catch(err) {
-      if (err instanceof UserError) player.chat(serv.color.red + 'Error: ' + err.message);
+      if (err.userError) player.chat(serv.color.red + 'Error: ' + err.message);
       else setTimeout(() => {throw err;}, 0);
     }
   }
diff --git a/src/lib/user_error.js b/src/lib/user_error.js
index cb15757..b1b7c78 100644
--- a/src/lib/user_error.js
+++ b/src/lib/user_error.js
@@ -9,6 +9,7 @@ class ExtendableError extends Error {
 
 class UserError extends ExtendableError {
   constructor(message) {
+    this.userError=1;
     super(message);
   }
 }