diff --git a/src/antenna.cpp b/src/antenna.cpp
index f2130f54..9f6a8a9b 100644
--- a/src/antenna.cpp
+++ b/src/antenna.cpp
@@ -2,6 +2,8 @@
 
 #ifdef HAS_ANTENNA_SWITCH
 
+#include <Arduino.h>
+
 // Local logging tag
 static const char TAG[] = "wifi";
 
@@ -33,4 +35,4 @@ void antenna_select(const uint8_t _ant) {
   ESP_LOGI(TAG, "Wifi Antenna switched to %s", _ant ? "external" : "internal");
 }
 
-#endif
\ No newline at end of file
+#endif