diff --git a/proton b/proton
index 6719b4dc..365f0827 100755
--- a/proton
+++ b/proton
@@ -1291,6 +1291,7 @@ def default_compat_config():
                 "1404090", #Trivia Tricks
                 "2052410", #WITCH ON THE HOLY NIGHT
                 "789910", #Planet of the Apes: Last Frontier
+                "1183470", #Imperiums: Greek Wars
                 ]:
             ret.add("heapdelayfree")