diff --git a/chapters/maps/presence/index.md b/chapters/maps/presence/index.md
index d0ec275..7b34ea2 100644
--- a/chapters/maps/presence/index.md
+++ b/chapters/maps/presence/index.md
@@ -2,5 +2,10 @@
 title: Testing for the Presence of a Key in a Map
 question: How do I determine if a map contains a given key?
 ---
-
-http://stackoverflow.com/questions/2050391/how-to-check-if-a-map-contains-a-key-in-go
+```
+  if val, ok := dict["foo"]; ok {
+      //key found - do somehting
+  } else {
+      //Key does not exist
+  }
+```