diff --git a/libraries/AP_HAL_PX4/px4_param.cpp b/libraries/AP_HAL_PX4/px4_param.cpp
index e33075b058..75b0adec93 100644
--- a/libraries/AP_HAL_PX4/px4_param.cpp
+++ b/libraries/AP_HAL_PX4/px4_param.cpp
@@ -17,9 +17,13 @@
 
 #include "uORB/uORB.h"
 #include "uORB/topics/parameter_update.h"
-
+#include <uORB/topics/uavcan_parameter_request.h>
+#include <uORB/topics/uavcan_parameter_value.h>
+        
 /** parameter update topic */
 ORB_DEFINE(parameter_update, struct parameter_update_s);
+ORB_DEFINE(uavcan_parameter_request, struct uavcan_parameter_request_s);
+ORB_DEFINE(uavcan_parameter_value, struct uavcan_parameter_value_s);
 
 param_t param_find(const char *name)
 {
@@ -37,4 +41,9 @@ int param_set(param_t param, const void *val)
     return -1;
 }
 
+int
+param_set_no_notification(param_t param, const void *val)
+{
+    return -1;
+}
 #endif // CONFIG_HAL_BOARD