diff --git a/pkgs/tools/security/pinentry-bemenu/default.nix b/pkgs/tools/security/pinentry-bemenu/default.nix
index ed43ee382597..36fff7d34d5c 100644
--- a/pkgs/tools/security/pinentry-bemenu/default.nix
+++ b/pkgs/tools/security/pinentry-bemenu/default.nix
@@ -21,5 +21,6 @@ stdenv.mkDerivation rec {
     license = licenses.gpl3Plus;
     maintainers = with maintainers; [ jc ];
     platforms = with platforms; linux;
+    mainProgram = "pinentry-bemenu";
   };
 }