diff --git a/pkgs/misc/beep/default.nix b/pkgs/misc/beep/default.nix
index 31fbb82cc357..180b53e1e768 100644
--- a/pkgs/misc/beep/default.nix
+++ b/pkgs/misc/beep/default.nix
@@ -24,5 +24,6 @@ stdenv.mkDerivation rec {
     homepage = "https://github.com/spkr-beep/beep";
     license = licenses.gpl2Only;
     platforms = platforms.linux;
+    mainProgram = "beep";
   };
 }