diff --git a/asm/field_map_obj.s b/asm/field_map_obj.s
index 5801bbc5f3..0ea219238c 100644
--- a/asm/field_map_obj.s
+++ b/asm/field_map_obj.s
@@ -5,28 +5,6 @@
 
 	.text
 
-	thumb_func_start npcs_clear_ids_and_state
-npcs_clear_ids_and_state: @ 808D410
-	push {r4,r5,lr}
-	movs r4, 0
-	ldr r5, =gUnknown_02037350
-_0808D416:
-	lsls r0, r4, 3
-	adds r0, r4
-	lsls r0, 2
-	adds r0, r5
-	bl npc_clear_ids_and_state
-	adds r0, r4, 0x1
-	lsls r0, 24
-	lsrs r4, r0, 24
-	cmp r4, 0xF
-	bls _0808D416
-	pop {r4,r5}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end npcs_clear_ids_and_state
-
 	thumb_func_start sub_808D438
 sub_808D438: @ 808D438
 	push {lr}
diff --git a/include/field_map_obj.h b/include/field_map_obj.h
index ebc4457943..e40f090627 100644
--- a/include/field_map_obj.h
+++ b/include/field_map_obj.h
@@ -5,6 +5,8 @@
 
 // Exported RAM declarations
 
+extern struct MapObject gUnknown_02037350[16];
+
 // Exported ROM declarations
 
 #endif //POKEEMERALD_FIELD_MAP_OBJ_H
diff --git a/src/field_map_obj.c b/src/field_map_obj.c
index 9451863b4d..1931827759 100644
--- a/src/field_map_obj.c
+++ b/src/field_map_obj.c
@@ -21,3 +21,12 @@ void npc_clear_ids_and_state(struct MapObject *mapObject)
     mapObject->mapGroup = -1;
     mapObject->mapobj_unk_1C = -1;
 }
+
+void npcs_clear_ids_and_state(void)
+{
+    u8 i;
+    for (i = 0; i < ARRAY_COUNT(gUnknown_02037350); i ++)
+    {
+        npc_clear_ids_and_state(&gUnknown_02037350[i]);
+    }
+}