diff --git a/arch/mn10300/include/asm/processor.h b/arch/mn10300/include/asm/processor.h
index 4c1b5cc14c19..f7b3c9ab2cb5 100644
--- a/arch/mn10300/include/asm/processor.h
+++ b/arch/mn10300/include/asm/processor.h
@@ -127,7 +127,6 @@ static inline void start_thread(struct pt_regs *regs,
 {
 	struct thread_info *ti = current_thread_info();
 	struct pt_regs *frame0;
-	set_fs(USER_DS);
 
 	frame0 = thread_info_to_uregs(ti);
 	frame0->epsw = EPSW_nSL | EPSW_IE | EPSW_IM;