diff --git a/Rover/system.cpp b/Rover/system.cpp
index fbdeabc12f..995b1f382b 100644
--- a/Rover/system.cpp
+++ b/Rover/system.cpp
@@ -299,6 +299,7 @@ bool Rover::is_boat() const
 
 #include <AP_Avoidance/AP_Avoidance.h>
 #include <AP_ADSB/AP_ADSB.h>
-
+#if HAL_ADSB_ENABLED
 // dummy method to avoid linking AP_Avoidance
 AP_Avoidance *AP::ap_avoidance() { return nullptr; }
+#endif