diff --git a/lodash.js b/lodash.js
index 879159985..92c566ac9 100644
--- a/lodash.js
+++ b/lodash.js
@@ -17020,9 +17020,10 @@
     baseForOwn(LazyWrapper.prototype, function(func, methodName) {
       var lodashFunc = lodash[methodName];
       if (lodashFunc) {
-        var key = (lodashFunc.name + ''),
-            names = realNames[key] || (realNames[key] = []);
+        var key = lodashFunc.name + '';
+        if (!hasOwnProperty.call(realNames, key)) return;
 
+        var names = realNames[key] || (realNames[key] = []);
         names.push({ 'name': methodName, 'func': lodashFunc });
       }
     });