1 files changed, 4 insertions, 0 deletions
diff --git a/src/map/duel.h b/src/map/duel.h
index 5405d2eee..956aed36d 100644
--- a/src/map/duel.h
+++ b/src/map/duel.h
@@ -5,6 +5,10 @@
 #ifndef _MAP_DUEL_H_
 #define _MAP_DUEL_H_
 
+#include "../common/cbasetypes.h"
+
+struct map_session_data;
+
 struct duel {
 	int members_count;
 	int invites_count;