diff --git a/pkgs/by-name/lo/localsend/linux.nix b/pkgs/by-name/lo/localsend/linux.nix
index 60aa62fd9aa5..82e96e534d25 100644
--- a/pkgs/by-name/lo/localsend/linux.nix
+++ b/pkgs/by-name/lo/localsend/linux.nix
@@ -93,7 +93,7 @@ flutter341.buildFlutterApplication (finalAttrs: {
       exec = "localsend_app %U";
       icon = "localsend";
       desktopName = "LocalSend";
-      startupWMClass = "localsend_app";
+      startupWMClass = "org.localsend.localsend_app";
       comment = meta.description;
       genericName = "File Transfer";
       categories = [