diff --git a/u2/list_ops.py b/u2/list_ops.py
index 29a5cf9..45bc203 100644
--- a/u2/list_ops.py
+++ b/u2/list_ops.py
@@ -27,7 +27,7 @@ def length(l):
 
 def map(function, list):
     result = []
-    for item in list
+    for item in list:
         result += [function(item)]
     return result