diff --git a/pkgs/development/python-modules/mitmproxy/default.nix b/pkgs/development/python-modules/mitmproxy/default.nix
index ac8c44685f6c..018ac6209de4 100644
--- a/pkgs/development/python-modules/mitmproxy/default.nix
+++ b/pkgs/development/python-modules/mitmproxy/default.nix
@@ -155,5 +155,6 @@ buildPythonPackage rec {
     changelog = "https://github.com/mitmproxy/mitmproxy/blob/${src.tag}/CHANGELOG.md";
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ SuperSandro2000 ];
+    mainProgram = "mitmproxy";
   };
 }