diff --git a/proton b/proton
index 7502b17f..0c04aa41 100755
--- a/proton
+++ b/proton
@@ -1220,6 +1220,7 @@ def default_compat_config():
 
         if appid in [
                 "71230", #Crazy Taxi
+                "3328910", #MySims Kingdom
                 ]:
             ret.add("heaptopdown")