diff --git a/flake.nix b/flake.nix
index 0ff61ae..443afac 100644
--- a/flake.nix
+++ b/flake.nix
@@ -46,7 +46,7 @@
         ];
         preBuild = ''
           set -x
-          export PATH=${hs-bindgen-cli}/bin:\$PATH
+          export PATH=${hs-bindgen-cli}/bin:$PATH
           ./generate.sh
           set +x
         '';