diff --git a/pkgs/by-name/mi/micropython/package.nix b/pkgs/by-name/mi/micropython/package.nix
index fb75f70d01c8..3a6ca7e7bf40 100644
--- a/pkgs/by-name/mi/micropython/package.nix
+++ b/pkgs/by-name/mi/micropython/package.nix
@@ -85,5 +85,6 @@ stdenv.mkDerivation rec {
       prusnak
       sgo
     ];
+    mainProgram = "micropython";
   };
 }