diff --git a/README.md b/README.md
index 1d3b417..7d06489 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ An itsy bitsy floating window manager with roots in `catwm`.
 
 - No borders.
 - No bar support.
-- No ICCM.
+- No ICCCM.
 - No EMWH.
 - Alt-Tab window focusing.
 - etc etc etc