diff --git a/user-modules/desktop/custom/window-manager/river.nix b/user-modules/desktop/custom/window-manager/river.nix
index 737f77f..8d7d07f 100644
--- a/user-modules/desktop/custom/window-manager/river.nix
+++ b/user-modules/desktop/custom/window-manager/river.nix
@@ -259,6 +259,7 @@ in
               "'bar'" = "csd";
               "'*'" = "ssd";
               "'wpa_gui'" = "float";
+              "'Xpra'" = "float";
             };
           };
         };