diff --git a/content/case.md b/content/case.md
index fc64a76..765fb0c 100644
--- a/content/case.md
+++ b/content/case.md
@@ -54,7 +54,7 @@ Another feature of case statements is that the possible values are narrowed, mea
 
 ``` nimrod
 let x = 2
-case (x and 3) + 7:
+case (x and 0b11) + 7:
   of 7: echo "A"
   of 8: echo "B"
   of 9: echo "C"