diff --git a/lib/compress.js b/lib/compress.js
index fa89c322..7d20a4ea 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -2272,14 +2272,6 @@ merge(Compressor.prototype, {
         });
     });
 
-    OPT(AST_NaN, function (self, compressor) {
-        return make_node(AST_Binary, self, {
-            operator : '/',
-            left     : make_node(AST_Number, self, {value: 0}),
-            right    : make_node(AST_Number, self, {value: 0})
-        });
-    });
-
     OPT(AST_Undefined, function(self, compressor){
         if (compressor.option("unsafe")) {
             var scope = compressor.find_parent(AST_Scope);