diff --git a/src/platform/nrf52/architecture.h b/src/platform/nrf52/architecture.h
index c9938062e..b1a2439e6 100644
--- a/src/platform/nrf52/architecture.h
+++ b/src/platform/nrf52/architecture.h
@@ -149,3 +149,5 @@
 // No serial ports on this board - ONLY use segger in memory console
 #define USE_SEGGER
 #endif
+
+#define xPortInIsrContext() ((SCB->ICSR & SCB_ICSR_VECTACTIVE_Msk) == 0 ? pdFALSE : pdTRUE)