diff --git a/README.md b/README.md
index ed487d5..6a2e4a5 100644
--- a/README.md
+++ b/README.md
@@ -135,7 +135,7 @@ Merging in:
 ```yaml
 Resources:
   Resource1:
-    AvailabilityZones: !Replace
+    AvailabilityZones: !replace
       - us-east-1c
 ```