diff --git a/pkgs/by-name/hi/hifile/package.nix b/pkgs/by-name/hi/hifile/package.nix
index cb40367c40a5..f01e102e0afe 100644
--- a/pkgs/by-name/hi/hifile/package.nix
+++ b/pkgs/by-name/hi/hifile/package.nix
@@ -27,6 +27,7 @@ appimageTools.wrapType2 {
     install -m 444 -D ${appimageContents}/HiFile.png $out/share/icons/hicolor/512x512/apps/HiFile.png
     substituteInPlace $out/share/applications/HiFile.desktop \
       --replace-fail 'Exec=HiFile' 'Exec=hifile'
+    echo "StartupWMClass=app.hifile.www.HiFile" >> $out/share/applications/HiFile.desktop
   '';
 
   passthru.updateScript = ./update.sh;