diff --git a/tools/unit-test-app/components/test_utils/ref_clock.c b/tools/unit-test-app/components/test_utils/ref_clock.c
index 668a79e3d..3a25a6227 100644
--- a/tools/unit-test-app/components/test_utils/ref_clock.c
+++ b/tools/unit-test-app/components/test_utils/ref_clock.c
@@ -130,10 +130,10 @@ void ref_clock_init()
 
 static void IRAM_ATTR pcnt_isr(void* arg)
 {
-    portENTER_CRITICAL(&s_lock);
+    portENTER_CRITICAL_ISR(&s_lock);
     PCNT.int_clr.val = BIT(REF_CLOCK_PCNT_UNIT);
     s_milliseconds += REF_CLOCK_PRESCALER_MS;
-    portEXIT_CRITICAL(&s_lock);
+    portEXIT_CRITICAL_ISR(&s_lock);
 }
 
 void ref_clock_deinit()