diff --git a/ArduSub/Parameters.cpp b/ArduSub/Parameters.cpp
index cbc0c3ef89..8f5438a94f 100644
--- a/ArduSub/Parameters.cpp
+++ b/ArduSub/Parameters.cpp
@@ -419,9 +419,9 @@ const AP_Param::Info Sub::var_info[] = {
     // @Path: ../libraries/AP_Relay/AP_Relay.cpp
     GOBJECT(relay,                  "RELAY_", AP_Relay),
 
-    // @Group: COMPASS
+    // @Group: COMPASS_
     // @Path: ../libraries/AP_Compass/AP_Compass.cpp
-    GOBJECT(compass,        "COMPASS", Compass),
+    GOBJECT(compass,        "COMPASS_", Compass),
 
     // @Group: INS_
     // @Path: ../libraries/AP_InertialSensor/AP_InertialSensor.cpp