diff --git a/libraries/AP_HAL_ESP32/RCOutput.h b/libraries/AP_HAL_ESP32/RCOutput.h
index bdaf4f3483..e7c00d7994 100644
--- a/libraries/AP_HAL_ESP32/RCOutput.h
+++ b/libraries/AP_HAL_ESP32/RCOutput.h
@@ -21,7 +21,6 @@
 
 #include <AP_HAL/RCOutput.h>
 #include "HAL_ESP32_Namespace.h"
-#define HAL_PARAM_DEFAULTS_PATH nullptr
 #include <AP_HAL/Util.h>
 
 #include "driver/gpio.h"