diff --git a/lisp/default.nix b/lisp/default.nix
deleted file mode 100644
index 0969c7abf..000000000
--- a/lisp/default.nix
+++ /dev/null
@@ -1,16 +0,0 @@
-{ depot ? import <depot> {},
-  universe ? import <universe> {},
-  ...
-}:
-
-depot.nix.buildLisp.program {
-  name = "unit-testing";
-
-  deps = with universe.third_party.lisp; [
-    prove
-  ];
-
-  srcs = [
-    ./unit-testing.lisp
-  ];
-}
diff --git a/lisp/unit-testing.lisp b/lisp/unit-testing.lisp
deleted file mode 100644
index c0b3be9b4..000000000
--- a/lisp/unit-testing.lisp
+++ /dev/null
@@ -1,13 +0,0 @@
-(in-package #:cl-user)
-(defpackage #:my-test
-  (:documentation "Unit testing in Common Lisp.")
-  (:use #:cl))
-(in-package #:my-test)
-
-(plan 3)
-
-(ok (not (find 4 '(1 2 3))))
-(is 4 4)
-(isnt 1 #\1)
-
-(finalize)