diff --git a/include/rom3.h b/include/rom3.h
index cee02b328..1fa55d11a 100644
--- a/include/rom3.h
+++ b/include/rom3.h
@@ -1,6 +1,8 @@
 #ifndef GUARD_ROM3_H
 #define GUARD_ROM3_H
 
+struct DisableStruct;
+
 void sub_800B858(void);
 void setup_poochyena_battle();
 void sub_800B950(void);