diff --git a/core/sched.cc b/core/sched.cc
index 01e2e5870710eb7883d2f36df187782487d79bc5..1994293ab63151425012aa49da366cdb166b02ce 100644
--- a/core/sched.cc
+++ b/core/sched.cc
@@ -482,7 +482,7 @@ void preempt_disable()
 void preempt_enable()
 {
     --preempt_counter;
-    if (!preempt_counter && need_reschedule) {
+    if (!preempt_counter && need_reschedule && arch::irq_enabled()) {
         schedule();
     }
 }