diff --git a/pkgs/development/python-modules/add-trailing-comma/default.nix b/pkgs/development/python-modules/add-trailing-comma/default.nix
index 17b26a91e3c..c38a4f06143 100644
--- a/pkgs/development/python-modules/add-trailing-comma/default.nix
+++ b/pkgs/development/python-modules/add-trailing-comma/default.nix
@@ -9,6 +9,7 @@
 buildPythonPackage rec {
   pname = "add-trailing-comma";
   version = "2.2.1";
+  format = "setuptools";
 
   disabled = pythonOlder "3.7";
 
@@ -19,7 +20,9 @@ buildPythonPackage rec {
     sha256 = "RBOL4mM9VciHHNmCTlRBIoXqeln19MKYxgv9p6GCNvU=";
   };
 
-  propagatedBuildInputs = [ tokenize-rt ];
+  propagatedBuildInputs = [
+    tokenize-rt
+  ];
 
   pythonImportsCheck = [
     "add_trailing_comma"
@@ -30,7 +33,7 @@ buildPythonPackage rec {
   ];
 
   meta = with lib; {
-    description = "A tool (and pre-commit hook) to automatically add trailing commas to calls and literals.";
+    description = "A tool (and pre-commit hook) to automatically add trailing commas to calls and literals";
     homepage = "https://github.com/asottile/add-trailing-comma";
     license = licenses.mit;
     maintainers = with maintainers; [ gador ];