diff --git a/README.md b/README.md
index f1a55f6..f944a36 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 Plugin to CASify your Redmine installation.
 
-## Compatibilty
+## Compatibility
 
 Tested with Redmine 2.2.3, but should be working fine with Redmine 2.x and possibly 1.x.