diff --git a/pkgs/by-name/et/eternal-terminal/package.nix b/pkgs/by-name/et/eternal-terminal/package.nix
index c88cdba172b7..18f1c5f3120a 100644
--- a/pkgs/by-name/et/eternal-terminal/package.nix
+++ b/pkgs/by-name/et/eternal-terminal/package.nix
@@ -64,6 +64,7 @@ stdenv.mkDerivation (finalAttrs: {
       jshort
       tomasrivera
     ];
+    mainProgram = "et";
     platforms = lib.platforms.linux ++ lib.platforms.darwin;
   };
 })