diff --git a/concepts/switch/introduction.md b/concepts/switch/introduction.md
index 0ba56114..2963c831 100644
--- a/concepts/switch/introduction.md
+++ b/concepts/switch/introduction.md
@@ -58,5 +58,5 @@ case 3:
 default:
     book_house(group_size);
 }
-// book_apartment happens wheng group_size is 2 or 3
+// book_apartment happens when group_size is 2 or 3
 ```