diff --git a/pkgs/development/python-modules/roadtools/default.nix b/pkgs/development/python-modules/roadtools/default.nix
index a1ae3ac156d9..30e137620f87 100644
--- a/pkgs/development/python-modules/roadtools/default.nix
+++ b/pkgs/development/python-modules/roadtools/default.nix
@@ -35,5 +35,6 @@ buildPythonPackage (finalAttrs: {
     homepage = "https://github.com/dirkjanm/ROADtools";
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ fab ];
+    mainProgram = "roadtools";
   };
 })