diff --git a/c/CobolScript b/c/CobolScript.cbl
similarity index 100%
rename from c/CobolScript
rename to c/CobolScript.cbl
diff --git a/readme.md b/readme.md
index cdcb7188..16ccb166 100644
--- a/readme.md
+++ b/readme.md
@@ -218,7 +218,7 @@ Make sure to see [contributing.md](/contributing.md) for instructions on contrib
 * [CLISP](c/CLISP.lisp)
 * [Clojure](c/Clojure.clj)
 * [COBOL](c/COBOL.cbl)
-* [CobolScript](c/CobolScript)
+* [CobolScript](c/CobolScript.cbl)
 * [Cobra](c/Cobra.cobra)
 * [Coconut](c/Coconut.coc)
 * [CoffeeScript](c/CoffeeScript.coffee)