diff --git a/projects/mtg/include/DamageResolverLayer.h b/projects/mtg/include/DamageResolverLayer.h
index 9c5f4e0fa..d11185624 100644
--- a/projects/mtg/include/DamageResolverLayer.h
+++ b/projects/mtg/include/DamageResolverLayer.h
@@ -3,7 +3,7 @@
 #include "../include/PlayGuiObjectController.h"
 
 class MTGCardInstance;
-class DamagerDamaged;
+struct DamagerDamaged;
 class DamageStack;