1 files changed, 1 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/python-modules/mutag/default.nix b/nixpkgs/pkgs/development/python-modules/mutag/default.nix
index f6e8020337c7..9076464d457c 100644
--- a/nixpkgs/pkgs/development/python-modules/mutag/default.nix
+++ b/nixpkgs/pkgs/development/python-modules/mutag/default.nix
@@ -23,6 +23,7 @@ buildPythonPackage {
   meta = with lib; {
     homepage = "https://github.com/aroig/mutag";
     description = "A script to change email tags in a mu indexed maildir";
+    mainProgram = "mutag";
     license = licenses.gpl3;
     maintainers = with maintainers; [ ];
   };