diff --git a/ArduSub/Parameters.cpp b/ArduSub/Parameters.cpp
index d517928808..766714c983 100644
--- a/ArduSub/Parameters.cpp
+++ b/ArduSub/Parameters.cpp
@@ -640,9 +640,6 @@ const AP_Param::GroupInfo ParametersG2::var_info[] = {
   constructor for g2 object
  */
 ParametersG2::ParametersG2()
-#if PROXIMITY_ENABLED == ENABLED
-    : proximity(sub.serial_manager)
-#endif
 {
     AP_Param::setup_object_defaults(this, var_info);
 }