diff --git a/pkgs/servers/radarr/default.nix b/pkgs/servers/radarr/default.nix
index 7ea36b024791..ce5deb19de5b 100644
--- a/pkgs/servers/radarr/default.nix
+++ b/pkgs/servers/radarr/default.nix
@@ -52,6 +52,7 @@ in stdenv.mkDerivation rec {
     changelog = "https://github.com/Radarr/Radarr/releases/tag/v${version}";
     license = licenses.gpl3Only;
     maintainers = with maintainers; [ edwtjo purcell ];
+    mainProgram = "Radarr";
     platforms = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
   };
 }