diff --git a/src/string.asm b/src/string.asm
index 6f27b48..b5ba02a 100644
--- a/src/string.asm
+++ b/src/string.asm
@@ -118,7 +118,7 @@ strclr:
 ;	rdx*	Length of str1
 ;	r8* 	Backup for rdi
 strcmp:
-	mov	rax, -1
+	xor	rax, rax
 	cmp	byte [rdi], EOS
 	je	.equal
 	cmp	byte [rsi], EOS
@@ -139,7 +139,7 @@ strcmp:
 	.equal:
 	cmp	byte [rsi], EOS
 	jne	.quit
-	mov	rax, -1
+	xor	rax, rax
 
 	.quit:
 	ret