diff --git a/include/constants/items.h b/include/constants/items.h
index 388ffba18..41d63c4a3 100644
--- a/include/constants/items.h
+++ b/include/constants/items.h
@@ -384,7 +384,7 @@
 #define ITEM_OLD_SEA_MAP 376
 
 #define ITEM_LAST_ID 376
-#define ITEM_FIELD_ARROW 377
+#define ITEM_FIELD_ARROW ITEM_LAST_ID + 1
 
 #define FIRST_BERRY_INDEX ITEM_CHERI_BERRY
 #define LAST_BERRY_INDEX ITEM_ENIGMA_BERRY