diff --git a/o/Ook.ok b/o/Ook!.ok
similarity index 100%
rename from o/Ook.ok
rename to o/Ook!.ok
diff --git a/readme.md b/readme.md
index 745bfb4e..b75fa2ad 100644
--- a/readme.md
+++ b/readme.md
@@ -521,7 +521,7 @@ Make sure to see [contributing.md](/contributing.md) for instructions on contrib
 * [Octave](o/Octave.m)
 * [Omgrofl](o/Omgrofl.omgrofl)
 * [Ooc](o/Ooc.ooc)
-* [Ook](o/Ook.ok)
+* [Ook!](o/Ook!.ok)
 * [Opa](o/Opa.opa)
 * [OpenLaszlo](o/OpenLaszlo.lzx)
 * [Oracle SQL](o/Oracle%20SQL.sql)