diff --git a/src/kernel/syscall.s b/src/kernel/syscall.s
index ad41c2d..69a4253 100644
--- a/src/kernel/syscall.s
+++ b/src/kernel/syscall.s
@@ -116,6 +116,7 @@ syscall_enable:
 
 	mov rcx, MSR_FMASK
 	mov rax, FMASK_VAL
+	mov rdx, 0
 	wrmsr
 
 	pop rbp