diff --git a/pkgs/development/python-modules/appdirs/default.nix b/pkgs/development/python-modules/appdirs/default.nix
index d3e71a5f9051..7b041139a171 100644
--- a/pkgs/development/python-modules/appdirs/default.nix
+++ b/pkgs/development/python-modules/appdirs/default.nix
@@ -10,7 +10,7 @@
 buildPythonPackage rec {
   pname = "appdirs";
   version = "1.4.4";
-  pypoject = true;
+  pyproject = true;
 
   disabled = pythonOlder "3.8";