diff --git a/flake.nix b/flake.nix
index 868012b..7f5d67b 100644
--- a/flake.nix
+++ b/flake.nix
@@ -77,7 +77,7 @@
           };
           rt_demo_lisp = {
             type = "app";
-            program = "${packages.default}/bin/rt_demo_lisp";
+            program = "${packages.default}/bin/rt_lisp_demo";
           };
           default = rt_demo_lisp;
         };
diff --git a/src/bin/demo.rs b/src/bin/lisp_demo.rs
similarity index 100%
rename from src/bin/demo.rs
rename to src/bin/lisp_demo.rs