diff --git a/src/SensorBMM150.hpp b/src/SensorBMM150.hpp
index 17b48f4..fa9b479 100644
--- a/src/SensorBMM150.hpp
+++ b/src/SensorBMM150.hpp
@@ -239,7 +239,7 @@ class SensorBMM150
 
 private:
 
-    static void IRAM_ATTR handleISR(/*void *available*/)
+    static void  handleISR(/*void *available*/)
     {
         // *(bool *)(available) = true;
           __data_available = true;