diff --git a/tasmota/Arduino.h b/tasmota/Arduino.h
index d5db76310..a4ef77535 100644
--- a/tasmota/Arduino.h
+++ b/tasmota/Arduino.h
@@ -17,6 +17,8 @@
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
+#ifdef ESP8266
+
 #ifndef Arduino_h
 #define Arduino_h
 
@@ -298,3 +300,5 @@ inline void configTzTime(const char* tz, const char* server1,
 // this is mandatory for allowing OOM *alloc definitions in .ino files
 #include "umm_malloc/umm_malloc_cfg.h"
 #endif
+
+#endif