diff --git a/lib/Connection.js b/lib/Connection.js
index 7136991..e905235 100644
--- a/lib/Connection.js
+++ b/lib/Connection.js
@@ -33,7 +33,8 @@ var MAX_INT = 9007199254740992,
     RE_BACKSLASH = /\\/g,
     RE_DBLQUOTE = /"/g,
     RE_ESCAPE = /\\\\/g,
-    RE_INTEGER = /^\d+$/;
+    RE_INTEGER = /^\d+$/,
+    RE_PUSH_TEXT_CODES = /^APPENDUID|COPYUID$/i;
 
 function Connection(config) {
   if (!(this instanceof Connection))
@@ -1390,7 +1391,10 @@ Connection.prototype._resTagged = function(info) {
     });
   } else {
     req.cbargs.unshift(err);
-    req.cbargs.push(info.textCode);
+    if (info.textCode
+        && info.textCode.key
+        && RE_PUSH_TEXT_CODES.test(info.textCode.key))
+      req.cbargs.push(info.textCode);
     req.cb && req.cb.apply(this, req.cbargs);
   }