diff --git a/examples/DFRobotAS3935LightningSensorDetailed/DFRobotAS3935LightningSensorDetailed.ino b/examples/DFRobotAS3935LightningSensorDetailed/DFRobotAS3935LightningSensorDetailed.ino
index 40b141a..4ebb707 100644
--- a/examples/DFRobotAS3935LightningSensorDetailed/DFRobotAS3935LightningSensorDetailed.ino
+++ b/examples/DFRobotAS3935LightningSensorDetailed/DFRobotAS3935LightningSensorDetailed.ino
@@ -128,7 +128,11 @@ void loop()
 }
 
 //IRQ handler for AS3935 interrupts
+#if defined(ESP32) || defined(ESP8266)
+void IRAM_ATTR AS3935_ISR()
+#else
 void AS3935_ISR()
+#endif
 {
   AS3935IsrTrig = 1;
 }
diff --git a/examples/DFRobotAS3935LightningSensorOrdinary/DFRobotAS3935LightningSensorOrdinary.ino b/examples/DFRobotAS3935LightningSensorOrdinary/DFRobotAS3935LightningSensorOrdinary.ino
index 340826b..69ae375 100644
--- a/examples/DFRobotAS3935LightningSensorOrdinary/DFRobotAS3935LightningSensorOrdinary.ino
+++ b/examples/DFRobotAS3935LightningSensorOrdinary/DFRobotAS3935LightningSensorOrdinary.ino
@@ -106,7 +106,11 @@ void loop()
   }
 }
 //IRQ handler for AS3935 interrupts
+#if defined(ESP32) || defined(ESP8266)
+void IRAM_ATTR AS3935_ISR()
+#else
 void AS3935_ISR()
+#endif
 {
   AS3935IsrTrig = 1;
 }