diff --git a/lodash.src.js b/lodash.src.js
index f544b39f6..a5ea7809b 100644
--- a/lodash.src.js
+++ b/lodash.src.js
@@ -2486,7 +2486,7 @@
         if (isObjectLike(srcValue)) {
           stackA || (stackA = []);
           stackB || (stackB = []);
-          return baseMergeDeep(object, source, baseMerge, key, customizer, stackA, stackB);
+          return baseMergeDeep(object, source, key, baseMerge, customizer, stackA, stackB);
         }
         var value = object[key],
             result = customizer ? customizer(value, srcValue, key, object, source) : undefined,
@@ -2511,14 +2511,14 @@
      * @private
      * @param {Object} object The destination object.
      * @param {Object} source The source object.
-     * @param {Function} mergeFunc The function to merge values.
      * @param {string} key The key of the property value to merge.
+     * @param {Function} mergeFunc The function to merge values.
      * @param {Function} [customizer] The function to customize merging properties.
      * @param {Array} [stackA=[]] Tracks traversed source objects.
      * @param {Array} [stackB=[]] Associates values with source counterparts.
      * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
      */
-    function baseMergeDeep(object, source, mergeFunc, key, customizer, stackA, stackB) {
+    function baseMergeDeep(object, source, key, mergeFunc, customizer, stackA, stackB) {
       var length = stackA.length,
           srcValue = source[key];