diff --git a/asm/field_map_obj.s b/asm/field_map_obj.s
index 9a8294ab2..a6333af8f 100755
--- a/asm/field_map_obj.s
+++ b/asm/field_map_obj.s
@@ -5,45 +5,6 @@
 
 	.text
 
-	thumb_func_start npc_set_running_behaviour_etc
-npc_set_running_behaviour_etc: @ 8092B2C
-	push {r4,lr}
-	mov r12, r0
-	lsls r1, 24
-	lsrs r1, 24
-	movs r3, 0
-	strb r1, [r0, 0x6]
-	adds r0, 0x21
-	strb r3, [r0]
-	adds r0, 0x1
-	strb r3, [r0]
-	ldr r4, =gSprites
-	mov r0, r12
-	ldrb r2, [r0, 0x4]
-	lsls r0, r2, 4
-	adds r0, r2
-	lsls r0, 2
-	adds r2, r4, 0
-	adds r2, 0x1C
-	adds r0, r2
-	ldr r2, =gUnknown_08505438
-	lsls r1, 2
-	adds r1, r2
-	ldr r1, [r1]
-	str r1, [r0]
-	mov r0, r12
-	ldrb r1, [r0, 0x4]
-	lsls r0, r1, 4
-	adds r0, r1
-	lsls r0, 2
-	adds r0, r4
-	strh r3, [r0, 0x30]
-	pop {r4}
-	pop {r0}
-	bx r0
-	.pool
-	thumb_func_end npc_set_running_behaviour_etc
-
 	thumb_func_start npc_running_behaviour_by_direction
 npc_running_behaviour_by_direction: @ 8092B78
 	lsls r0, 24
diff --git a/include/global.fieldmap.h b/include/global.fieldmap.h
index f8955b9fd..4a587cf57 100644
--- a/include/global.fieldmap.h
+++ b/include/global.fieldmap.h
@@ -299,6 +299,7 @@ struct MapObject2
     /*0x1F*/ u8 mapobj_unk_1F;
     /*0x20*/ u8 mapobj_unk_20;
     /*0x21*/ u8 mapobj_unk_21;
+    /*0x22*/ u8 animId;
     /*size = 0x24*/
 };
 
diff --git a/src/field_map_obj.c b/src/field_map_obj.c
index 2987c09ee..06fd36be3 100755
--- a/src/field_map_obj.c
+++ b/src/field_map_obj.c
@@ -3626,6 +3626,15 @@ u8 sub_8092AF8(s16 x1, s16 y1, s16 x2, s16 y2)
     return DIR_SOUTH;
 }
 
+void npc_set_running_behaviour_etc(struct MapObject *mapObject, u8 animPattern)
+{
+    mapObject->animPattern = animPattern;
+    mapObject->mapobj_unk_21 = 0;
+    mapObject->animId = 0;
+    gSprites[mapObject->spriteId].callback = gUnknown_08505438[animPattern];
+    gSprites[mapObject->spriteId].data1 = 0;
+}
+
 asm(".section .text.get_face_direction_anim_id");
 
 void FieldObjectClearAnimIfSpecialAnimActive(struct MapObject *);