diff --git a/lib/map.js b/lib/map.js
index ecf016b..e703814 100644
--- a/lib/map.js
+++ b/lib/map.js
@@ -18,7 +18,10 @@ function clone(object) {
 }
 
 function map(iteratee, object) {
-  const updater = update(iteratee);
+  const updater = typeof iteratee === 'function' ?
+    iteratee :
+    update(iteratee);
+
   let newObject;
 
   forEach(object, (value, index) => {