diff --git a/default.nix b/default.nix
index 24a8428..8e79790 100644
--- a/default.nix
+++ b/default.nix
@@ -10,7 +10,7 @@ stdenv.mkDerivation {
     substituteInPlace direnvrc \
       --replace "grep" "${gnugrep}/bin/grep" \
       --replace "nix-shell" "${nix}/bin/nix-shell" \
-      --replace "nix-instantiate" "${nix}/bin/nix-shell"
+      --replace "nix-instantiate" "${nix}/bin/nix-instantiate"
   '';
 
   installPhase = ''