diff --git a/tasmota/core_esp8266_wiring_pwm.cpp b/tasmota/core_esp8266_wiring_pwm.cpp
index 608e06bda..f74334e43 100644
--- a/tasmota/core_esp8266_wiring_pwm.cpp
+++ b/tasmota/core_esp8266_wiring_pwm.cpp
@@ -21,6 +21,8 @@
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
+#ifdef ESP8266
+
 #include <Arduino.h>
 #include "core_esp8266_waveform.h"
 
@@ -37,8 +39,8 @@ extern void __analogWriteRange(uint32_t range) {
 }
 
 extern void __analogWriteFreq(uint32_t freq) {
-  if (freq < 100) {
-    analogFreq = 100;
+  if (freq < 40) {
+    analogFreq = 40;
   } else if (freq > 60000) {
     analogFreq = 60000;
   } else {
@@ -77,3 +79,5 @@ extern void analogWriteFreq(uint32_t freq) __attribute__((weak, alias("__analogW
 extern void analogWriteRange(uint32_t range) __attribute__((weak, alias("__analogWriteRange")));
 
 };
+
+#endif  // ESP8266