diff --git a/lodash.js b/lodash.js
index 0898a13f2..930f2a008 100644
--- a/lodash.js
+++ b/lodash.js
@@ -6389,7 +6389,7 @@
       var length = arrays.length,
           iteratee = length > 1 ? arrays[length - 1] : undefined;
 
-      iteratee = typeof iteratee == 'function' ? (arrays.length--, iteratee) : undefined;
+      iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined;
       return unzipWith(arrays, iteratee);
     });