diff --git a/default.nix b/default.nix
index d8055a8..12dcadf 100644
--- a/default.nix
+++ b/default.nix
@@ -55,7 +55,7 @@ resholve.mkDerivation {
   installPhase = ''
     runHook preInstall
     mkdir -p $out/bin
-    cp $src/bin/git-check-assertions $out/bin/git-check-assertions
+    cp bin/git-check-assertions $out/bin/git-check-assertions
     runHook postInstall
   '';