1 files changed, 1 insertions, 0 deletions
diff --git a/pkgs/development/python-modules/msg-parser/default.nix b/pkgs/development/python-modules/msg-parser/default.nix
index 9670403e640e..5e45338d0787 100644
--- a/pkgs/development/python-modules/msg-parser/default.nix
+++ b/pkgs/development/python-modules/msg-parser/default.nix
@@ -34,6 +34,7 @@ buildPythonPackage {
 
   meta = with lib; {
     description = "Python module to read, parse and converting Microsoft Outlook MSG E-Mail files.";
+    mainProgram = "msg_parser";
     homepage = "https://github.com/vikramarsid/msg_parser";
     license = licenses.bsd2;
     maintainers = with maintainers; [ happysalada ];