diff --git a/asm/lilycove_lady.s b/asm/lilycove_lady.s
index bb044a01e..1580d9595 100644
--- a/asm/lilycove_lady.s
+++ b/asm/lilycove_lady.s
@@ -5,26 +5,6 @@
 
 	.text
 
-	thumb_func_start sub_818E258
-sub_818E258: @ 818E258
-	push {lr}
-	movs r2, 0
-	adds r1, r0, 0
-	b _0818E268
-_0818E260:
-	adds r0, r2, 0x1
-	lsls r0, 24
-	lsrs r2, r0, 24
-	adds r1, 0x1
-_0818E268:
-	ldrb r0, [r1]
-	cmp r0, 0xFF
-	bne _0818E260
-	adds r0, r2, 0
-	pop {r1}
-	bx r1
-	thumb_func_end sub_818E258
-
 	thumb_func_start sub_818E274
 sub_818E274: @ 818E274
 	push {r4,lr}
diff --git a/src/lilycove_lady.c b/src/lilycove_lady.c
index 196867369..564b089a6 100644
--- a/src/lilycove_lady.c
+++ b/src/lilycove_lady.c
@@ -548,3 +548,12 @@ u8 sub_818E1F4(void)
     }
     return response;
 }
+
+u8 sub_818E258(const u8 *str)
+{
+    u8 len;
+    const u8 *ptr;
+
+    for (len = 0, ptr = str; *ptr != EOS; len ++, ptr ++);
+    return len;
+}