diff --git a/asm/non_matching/armos/sub_080305BC.inc b/asm/non_matching/armos/sub_080305BC.inc
deleted file mode 100644
index f1259e5b..00000000
--- a/asm/non_matching/armos/sub_080305BC.inc
+++ /dev/null
@@ -1,86 +0,0 @@
-	.syntax unified
-	push {r4, lr}
-	adds r4, r0, #0
-	ldrh r1, [r4, #0x2e]
-	movs r2, #0xf
-	adds r0, r2, #0
-	ands r0, r1
-	movs r3, #0
-	cmp r0, #8
-	bne _080305D0
-	movs r3, #1
-_080305D0:
-	ldrh r0, [r4, #0x32]
-	ands r2, r0
-	cmp r2, #8
-	bne _080305DC
-	movs r0, #2
-	orrs r3, r0
-_080305DC:
-	cmp r3, #3
-	bne _080305E4
-	movs r0, #1
-	b _0803064C
-_080305E4:
-	ldrb r1, [r4, #0x15]
-	movs r0, #8
-	ands r0, r1
-	cmp r0, #0
-	beq _0803061E
-	movs r0, #1
-	ands r0, r3
-	cmp r0, #0
-	bne _08030608
-	adds r0, r4, #0
-	bl ProcessMovement0
-	cmp r0, #0
-	bne _0803064A
-	ldrb r0, [r4, #0x15]
-	movs r1, #0x10
-	eors r0, r1
-	b _08030648
-_08030608:
-	cmp r2, #8
-	ble _08030610
-	movs r0, #0x10
-	b _08030612
-_08030610:
-	movs r0, #0
-_08030612:
-	strb r0, [r4, #0x15]
-	ldrb r1, [r4, #0x15]
-	movs r0, #8
-	ands r0, r1
-	cmp r0, #0
-	bne _0803064A
-_0803061E:
-	movs r0, #2
-	ands r3, r0
-	cmp r3, #0
-	bne _08030638
-	adds r0, r4, #0
-	bl ProcessMovement0
-	cmp r0, #0
-	bne _0803064A
-	ldrb r0, [r4, #0x15]
-	movs r1, #0x10
-	eors r0, r1
-	b _08030648
-_08030638:
-	ldrh r1, [r4, #0x2e]
-	movs r0, #0xf
-	ands r0, r1
-	cmp r0, #8
-	ble _08030646
-	movs r0, #8
-	b _08030648
-_08030646:
-	movs r0, #0x18
-_08030648:
-	strb r0, [r4, #0x15]
-_0803064A:
-	movs r0, #0
-_0803064C:
-	pop {r4, pc}
-	.align 2, 0
-	.syntax divided
diff --git a/src/enemy/armos.c b/src/enemy/armos.c
index 228c12bf..c2f4d54a 100644
--- a/src/enemy/armos.c
+++ b/src/enemy/armos.c
@@ -298,7 +298,52 @@ void sub_08030590(ArmosEntity* this) {
     sub_080307EC(this);
 }
 
-ASM_FUNC("asm/non_matching/armos/sub_080305BC.inc", bool32 sub_080305BC(ArmosEntity* this))
+bool32 sub_080305BC(ArmosEntity* this) {
+    u8 bVar4;
+
+    if ((super->x.HALF.HI & 0xf) == 8) {
+        bVar4 = 1;
+    } else {
+        bVar4 = 0;
+    }
+
+    if ((super->y.HALF.HI & 0xf) == 8) {
+        bVar4 |= 2;
+    }
+
+    if (bVar4 == 3) {
+        return TRUE;
+    }
+
+    if (DirectionIsHorizontal(super->direction)) {
+        if ((bVar4 & 1) == 0) {
+            if (ProcessMovement0(super)) {
+                return FALSE;
+            }
+            super->direction = DirectionTurnAround(super->direction);
+            return FALSE;
+        }
+        if ((super->y.HALF.HI & 0xf) >= 9) {
+            super->direction = DirectionSouth;
+        } else {
+            super->direction = DirectionNorth;
+        }
+        if (DirectionIsHorizontal(super->direction)) {
+            return FALSE;
+        }
+    }
+    if ((bVar4 & 2) == 0) {
+        if (ProcessMovement0(super)) {
+            return FALSE;
+        }
+        super->direction = DirectionTurnAround(super->direction);
+    } else if ((super->x.HALF.HI & 0xf) >= 9) {
+        super->direction = DirectionEast;
+    } else {
+        super->direction = DirectionWest;
+    }
+    return FALSE;
+}
 
 bool32 sub_08030650(ArmosEntity* this) {
     if (super->type == 0) {