diff --git a/flake.nix b/flake.nix
index 1e84046..a552edf 100644
--- a/flake.nix
+++ b/flake.nix
@@ -237,7 +237,7 @@
          rev = "9957cd48326fe8dbd52fdc50dd2502307f188b0d";
      }) {};
 
-     gnucash-old = gnucash;
+     gnucash-old = pkgs.gnucash;
 
         modules = [