diff --git a/sched/irq_attach.c b/sched/irq_attach.c
index cc5ff832e29..02063438f0e 100644
--- a/sched/irq_attach.c
+++ b/sched/irq_attach.c
@@ -91,7 +91,9 @@ int irq_attach(int irq, xcpt_t isr)
       state = irqsave();
       if (isr == NULL)
         {
+#ifndef CONFIG_ARCH_NOINTC
            up_disable_irq(irq);
+#endif
            isr = irq_unexpected_isr;
         }