diff --git a/src/console.asm b/src/console.asm
index 18a7533..19feb2a 100644
--- a/src/console.asm
+++ b/src/console.asm
@@ -141,7 +141,7 @@ printf:
 	mov	rcx, 1
 	jmp	%%movr8 ;nice label name isn't it?
 	%%padSpaces:
-	mov	rcx, 0
+	xor	rcx, rcx
 	%%movr8:
 	mov	r8, %2
 	call	%3
@@ -176,7 +176,7 @@ printf:
 	.process:
 		cmp	byte [rdi], EOS
 		je	.wrapup
-		mov	r9b, 0
+		xor	r9b, r9b
 		cmp	r10, printfBuffLen-1
 		je	.flushBuffer
 		.flushReturn_0:
diff --git a/src/tests.asm b/src/tests.asm
index 6911f93..5598764 100644
--- a/src/tests.asm
+++ b/src/tests.asm
@@ -1120,5 +1120,5 @@ _start:
 ;--- exit()
 ;---
 	leave
-	mov	rdi, 0
+	xor	rdi, rdi
 	call	exit