diff --git a/lib/index.js b/lib/index.js
index 2b516ca..88fddf7 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -160,9 +160,9 @@ const Channel = function(length = 0) {
       map: (callbackfn, thisArg) => {
         const output = Channel();
         (async () => {
-          await readOnly.forEach(value =>
-            output.push(callbackfn.call(thisArg, value))
-          );
+          await readOnly.forEach(value => {
+            output.push(callbackfn.call(thisArg, value));
+          });
 
           output.close();
         })();