diff --git a/src/ft_strcmp.asm b/src/ft_strcmp.asm
index fad7844..77adddf 100644
--- a/src/ft_strcmp.asm
+++ b/src/ft_strcmp.asm
@@ -17,9 +17,6 @@ loop:
         inc rcx
         jmp loop
 out:
-        mov rax, 0
-        mov rbx, 0
-        mov bl, BYTE [rsi + rcx]
-        mov al, BYTE [rdi + rcx]
-        sub rax, rbx
+        sub bl, dl
+        movsx rax, bl
         ret
\ No newline at end of file