diff --git a/.config/picom/picom.conf b/.config/picom/picom.conf
index f4d7e9a..4ea0b75 100644
--- a/.config/picom/picom.conf
+++ b/.config/picom/picom.conf
@@ -31,7 +31,8 @@ rounded-corners-exclude = [
         && IS_FLOATING@:s != 'True'",
     "QTILE_INTERNAL@:32c = 1",
     "window_type = 'tooltip'",
-    "class_g = 'mpv'"
+    "class_g = 'mpv'",
+    "class_g *= 'steam_app_'"
 ];
 
 #################################