diff --git a/proton b/proton
index c66b4117..e8f6eb7a 100755
--- a/proton
+++ b/proton
@@ -1124,6 +1124,7 @@ def default_compat_config():
                 "2630", #Call of Duty 2
                 "1060210", #Disaster Report 4: Summer Memories
                 "414740", #RAID: World War II
+                "201510", #Flatout 3
                 ]:
             ret.add("nofsync")
             ret.add("noesync")