diff --git a/asm/non_matching/ui/ButtonUIElement_Action1.inc b/asm/non_matching/ui/ButtonUIElement_Action1.inc
deleted file mode 100644
index 76f9a763..00000000
--- a/asm/non_matching/ui/ButtonUIElement_Action1.inc
+++ /dev/null
@@ -1,99 +0,0 @@
-	.syntax unified
-	push {r4, r5, r6, lr}
-	adds r5, r0, #0
-	ldrb r0, [r5, #2]
-	movs r6, #8
-	cmp r0, #0
-	bne _0801CC10
-	movs r6, #4
-	cmp r0, #0
-	bne _0801CC10
-	ldr r3, _0801CC08 @ =gUnk_0200AF00
-	ldrb r0, [r3, #1]
-	ldrb r2, [r5, #1]
-	asrs r0, r2
-	movs r1, #1
-	ands r0, r1
-	cmp r0, #0
-	bne _0801CBF6
-	ldr r0, _0801CC0C @ =gMessage
-	ldrb r1, [r0]
-	movs r0, #0x7f
-	ands r0, r1
-	cmp r0, #0
-	beq _0801CC10
-_0801CBF6:
-	lsls r0, r2, #1
-	adds r1, r3, #0
-	adds r1, #0x1c
-	adds r0, r0, r1
-	movs r1, #0
-	ldrsh r0, [r0, r1]
-	adds r1, r0, #0
-	subs r1, #0x28
-	b _0801CC1E
-	.align 2, 0
-_0801CC08: .4byte gUnk_0200AF00
-_0801CC0C: .4byte gMessage
-_0801CC10:
-	ldr r1, _0801CC7C @ =gUnk_0200AF00
-	ldrb r0, [r5, #1]
-	lsls r0, r0, #1
-	adds r1, #0x1c
-	adds r0, r0, r1
-	movs r2, #0
-	ldrsh r1, [r0, r2]
-_0801CC1E:
-	movs r2, #0xe
-	ldrsh r0, [r5, r2]
-	subs r4, r1, r0
-	adds r1, r4, #0
-	cmp r4, #0
-	bge _0801CC2C
-	rsbs r4, r4, #0
-_0801CC2C:
-	cmp r6, r4
-	bgt _0801CC32
-	adds r4, r6, #0
-_0801CC32:
-	adds r0, r1, #0
-	bl sub_08000E44
-	muls r4, r0, r4
-	cmp r4, #0
-	beq _0801CC44
-	ldrh r0, [r5, #0xe]
-	adds r0, r0, r4
-	strh r0, [r5, #0xe]
-_0801CC44:
-	ldr r0, _0801CC7C @ =gUnk_0200AF00
-	ldrb r1, [r5, #1]
-	lsls r1, r1, #1
-	adds r0, #0x16
-	adds r1, r1, r0
-	movs r0, #0
-	ldrsh r1, [r1, r0]
-	movs r2, #0xc
-	ldrsh r0, [r5, r2]
-	subs r4, r1, r0
-	adds r1, r4, #0
-	cmp r4, #0
-	bge _0801CC60
-	rsbs r4, r4, #0
-_0801CC60:
-	cmp r6, r4
-	bgt _0801CC66
-	adds r4, r6, #0
-_0801CC66:
-	adds r0, r1, #0
-	bl sub_08000E44
-	muls r4, r0, r4
-	cmp r4, #0
-	beq _0801CC78
-	ldrh r0, [r5, #0xc]
-	adds r0, r0, r4
-	strh r0, [r5, #0xc]
-_0801CC78:
-	pop {r4, r5, r6, pc}
-	.align 2, 0
-_0801CC7C: .4byte gUnk_0200AF00
-	.syntax divided
diff --git a/src/ui.c b/src/ui.c
index 613afa2e..cf68578d 100644
--- a/src/ui.c
+++ b/src/ui.c
@@ -11,6 +11,7 @@
 
 extern void sub_0805ECEC(u32, u32, u32, u32);
 extern bool32 ItemIsBottle(u32);
+extern u32 sub_08000E44(u32);
 
 typedef struct {
     u16 unk_0;
@@ -669,7 +670,48 @@ void ButtonUIElement_Action0(UIElement* element) {
     sub_0801CAFC(element, element->type);
 }
 
-ASM_FUNC("asm/non_matching/ui/ButtonUIElement_Action1.inc", void ButtonUIElement_Action1())
+void ButtonUIElement_Action1(UIElement* element) {
+    u32 MAX_MOVEMENT;
+    s32 y;
+    u32 y_diff;
+    s32 x;
+    u32 x_diff;
+
+    MAX_MOVEMENT = (!element->type2) ? 4 : 8;
+
+    if (element->type2 == 0 && (((gUnk_0200AF00.unk_1 >> element->type) & 1) || (gMessage.doTextBox & 0x7f) != 0)) {
+        y = (s16)gUnk_0200AF00.buttonY[element->type] - 0x28;
+    } else {
+        y = (s16)gUnk_0200AF00.buttonY[element->type];
+    }
+
+    y -= (s16)element->y;
+    y_diff = (y > 0) ? y : -y;
+
+    if ((s32)MAX_MOVEMENT <= (s32)y_diff) {
+        y_diff = MAX_MOVEMENT;
+    }
+
+    y_diff *= sub_08000E44(y);
+
+    if (y_diff != 0) {
+        element->y += y_diff;
+    }
+
+    x = (short)gUnk_0200AF00.buttonX[element->type];
+    x -= (short)element->x;
+    x_diff = (x < 0) ? -x : x;
+
+    if ((int)MAX_MOVEMENT <= (int)x_diff) {
+        x_diff = MAX_MOVEMENT;
+    }
+
+    x_diff *= sub_08000E44(x);
+
+    if (x_diff != 0) {
+        element->x += x_diff;
+    }
+}
 
 u32 sub_0801CC80(UIElement* element) {
     u8 type = element->type;