diff --git a/ArduSub/system.cpp b/ArduSub/system.cpp
index 54eb0676b2..a41524e7e6 100644
--- a/ArduSub/system.cpp
+++ b/ArduSub/system.cpp
@@ -68,7 +68,7 @@ void Sub::init_ardupilot()
 
     // Do GPS init
     gps.set_log_gps_bit(MASK_LOG_GPS);
-    gps.init(serial_manager);
+    gps.init();
 
     AP::compass().set_log_bit(MASK_LOG_COMPASS);
     AP::compass().init();