diff --git a/arch/x86_64/kernel/entry.S b/arch/x86_64/kernel/entry.S
index e126284..053d6e8 100644
--- a/arch/x86_64/kernel/entry.S
+++ b/arch/x86_64/kernel/entry.S
@@ -302,9 +302,7 @@
 	leaq 8(%rsp),%rdi	# &ptregs -> arg1	
 	call syscall_trace_leave
 	popq %rdi
-	btr  $TIF_SYSCALL_TRACE,%edi
-	btr  $TIF_SYSCALL_AUDIT,%edi
-	btr  $TIF_SINGLESTEP,%edi
+	andl $~(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SINGLESTEP),%edi
 	jmp int_restore_rest
 	
 int_signal: