diff --git a/mt7921/mac.c b/mt7921/mac.c
index ec10f95a..b2b88130 100644
--- a/mt7921/mac.c
+++ b/mt7921/mac.c
@@ -1548,7 +1548,8 @@ void mt7921_pm_power_save_work(struct work_struct *work)
 
 	delta = dev->pm.idle_timeout;
 	if (test_bit(MT76_HW_SCANNING, &mphy->state) ||
-	    test_bit(MT76_HW_SCHED_SCANNING, &mphy->state))
+	    test_bit(MT76_HW_SCHED_SCANNING, &mphy->state) ||
+	    dev->fw_assert)
 		goto out;
 
 	if (time_is_after_jiffies(dev->pm.last_activity + delta)) {