diff --git a/arch/score/kernel/signal.c b/arch/score/kernel/signal.c
index e382c52ca0d90b455d9bee68f7587f4278d36bc8..c268bbf8b41047b2717a5a41a7ed86178a7df24e 100644
--- a/arch/score/kernel/signal.c
+++ b/arch/score/kernel/signal.c
@@ -174,6 +174,7 @@ score_rt_sigreturn(struct pt_regs *regs)
 	/* It is more difficult to avoid calling this function than to
 	   call it and ignore errors.  */
 	do_sigaltstack((stack_t __user *)&st, NULL, regs->regs[0]);
+	regs->is_syscall = 0;
 
 	__asm__ __volatile__(
 		"mv\tr0, %0\n\t"