diff --git a/dist/lodash.underscore.js b/dist/lodash.underscore.js
index e15ba1127..8ca6cb080 100644
--- a/dist/lodash.underscore.js
+++ b/dist/lodash.underscore.js
@@ -2026,7 +2026,7 @@
    */
   function zip() {
     var index = -1,
-        length = isArray(length = max(arguments, 'length')) && length.length || 0,
+        length = isObject(length = max(arguments, 'length')) && length.length || 0,
         result = Array(length);
 
     while (++index < length) {
diff --git a/lodash.js b/lodash.js
index f778f0dd0..355cea392 100644
--- a/lodash.js
+++ b/lodash.js
@@ -3833,7 +3833,7 @@
     function zip() {
       var array = arguments.length > 1 ? arguments : arguments[0],
           index = -1,
-          length = isArray(length = max(array, 'length')) && length.length || 0,
+          length = isObject(length = max(array, 'length')) && length.length || 0,
           result = Array(length);
 
       while (++index < length) {