1 files changed, 1 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/python-modules/mail-parser/default.nix b/nixpkgs/pkgs/development/python-modules/mail-parser/default.nix
index 4ecb12642ccd..5364fd25c21f 100644
--- a/nixpkgs/pkgs/development/python-modules/mail-parser/default.nix
+++ b/nixpkgs/pkgs/development/python-modules/mail-parser/default.nix
@@ -28,6 +28,7 @@ buildPythonPackage rec {
 
   meta = with lib; {
     description = "A mail parser for python 2 and 3";
+    mainProgram = "mailparser";
     homepage = "https://github.com/SpamScope/mail-parser";
     license = licenses.asl20;
     maintainers = with maintainers; [ psyanticy ];