diff --git a/pkgs/development/python-modules/build/default.nix b/pkgs/development/python-modules/build/default.nix
index 7764889888c6..e7c45afdd317 100644
--- a/pkgs/development/python-modules/build/default.nix
+++ b/pkgs/development/python-modules/build/default.nix
@@ -77,6 +77,7 @@ buildPythonPackage rec {
   ];
 
   meta = with lib; {
+    mainProgram = "pyproject-build";
     description = "Simple, correct PEP517 package builder";
     longDescription = ''
       build will invoke the PEP 517 hooks to build a distribution package. It