diff --git a/string.asm b/string.asm
index eba96bc..488be1f 100644
--- a/string.asm
+++ b/string.asm
@@ -25,23 +25,24 @@ strcpy:
 	push	rbp
 	mov	rbp, rsp
 
+	mov	r11, rdi
 	xor	rax, rax
 	xor	rcx, rcx
 	.loop:
 		cmp	byte [rsi], 0x0
 		je	.0f
 		mov	r10b, byte [rsi]
-		mov	byte [rdi], r10b
+		mov	byte [r11], r10b
 		inc	rsi
-		inc	rdi
+		inc	r11
 		inc	rcx
 		jmp	.loop
 
 	.0f:
-	mov	byte [rdi], 0x0
+	mov	byte [r11], 0x0
 	cmp	rcx, 0
-	jne	.quit
-	xor	rax, rax
+	je	.quit
+	mov	rax, rdi
 
 	.quit:
 	leave