diff --git a/lib/scope.js b/lib/scope.js
index 7db670d5..9b1a9daf 100644
--- a/lib/scope.js
+++ b/lib/scope.js
@@ -165,7 +165,6 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
         }
         if (node instanceof AST_SymbolFunarg) {
             node.object_destructuring_arg = !!in_destructuring;
-            defun.def_variable(node, in_export);
         }
         if (node instanceof AST_Label) {
             node.thedef = node;