diff --git a/README.md b/README.md
index 0e9daa29..4577f7b9 100644
--- a/README.md
+++ b/README.md
@@ -209,7 +209,7 @@ $stack->push(
         new FilesystemCache('/tmp/')
       ),
       1800, // the TTL in seconds
-      new KeyValueHttpHeader(['Authorization']) // Optionnal - specify the headers that can change the cache key
+      new KeyValueHttpHeader(['Authorization']) // Optional - specify the headers that can change the cache key
     )
   ), 
   'greedy-cache'