diff --git a/ESP32-fixes.cpp b/ESP32-fixes.cpp
index a21a1df..e3c350c 100644
--- a/ESP32-fixes.cpp
+++ b/ESP32-fixes.cpp
@@ -17,6 +17,7 @@
  *  You should have received a copy of the GNU General Public License
  *  along with CommandStation.  If not, see <https://www.gnu.org/licenses/>.
  */
+#ifdef ARDUINO_ARCH_ESP32
 #include <Arduino.h>
 #include "ESP32-fixes.h"
 
@@ -57,3 +58,4 @@ void DCCEXanalogWrite(uint8_t pin, int value) {
     ledcWrite(pin_to_channel[pin], value);
   }
 }
+#endif
diff --git a/ESP32-fixes.h b/ESP32-fixes.h
index 64edaa3..0fd4a7f 100644
--- a/ESP32-fixes.h
+++ b/ESP32-fixes.h
@@ -17,8 +17,10 @@
  *  You should have received a copy of the GNU General Public License
  *  along with CommandStation.  If not, see <https://www.gnu.org/licenses/>.
  */
+#ifdef ARDUINO_ARCH_ESP32
 #pragma once
 #include <Arduino.h>
 void DCCEXanalogWriteFrequency(uint8_t pin, uint32_t frequency);
 void DCCEXanalogWrite(uint8_t pin, int value);
+#endif