diff --git a/pkgs/tools/X11/libstrangle/default.nix b/pkgs/tools/X11/libstrangle/default.nix
index d8c220d0fd7f..2d7f6b456c4b 100644
--- a/pkgs/tools/X11/libstrangle/default.nix
+++ b/pkgs/tools/X11/libstrangle/default.nix
@@ -28,5 +28,6 @@ stdenv.mkDerivation rec {
     license = licenses.gpl3;
     platforms = [ "x86_64-linux" ];
     maintainers = with maintainers; [ aske ];
+    mainProgram = "strangle";
   };
 }