diff --git a/pkgs/applications/office/trilium/desktop.nix b/pkgs/applications/office/trilium/desktop.nix
index 0436c31c94ee..9e100459f7ae 100644
--- a/pkgs/applications/office/trilium/desktop.nix
+++ b/pkgs/applications/office/trilium/desktop.nix
@@ -42,6 +42,7 @@ let
         comment = meta.description;
         desktopName = "Trilium Notes";
         categories = [ "Office" ];
+        startupWMClass = "trilium notes";
       })
     ];