diff --git a/AntennaTracker/Parameters.cpp b/AntennaTracker/Parameters.cpp
index 12b00cb5c8f37..ebb4dd3b3ba40 100644
--- a/AntennaTracker/Parameters.cpp
+++ b/AntennaTracker/Parameters.cpp
@@ -17,6 +17,7 @@ const AP_Param::Info Tracker::var_info[] = {
     // @Description: Allows setting an individual system id for this vehicle to distinguish it from others on the same network
     // @Range: 1 255
     // @User: Advanced
+    // @RebootRequired: True
     GSCALAR(sysid_this_mav,         "SYSID_THISMAV",  MAV_SYSTEM_ID),
 
     // @Param: SYSID_MYGCS
diff --git a/ArduCopter/Parameters.cpp b/ArduCopter/Parameters.cpp
index f8f1376c90a2a..07be05012e230 100644
--- a/ArduCopter/Parameters.cpp
+++ b/ArduCopter/Parameters.cpp
@@ -42,6 +42,7 @@ const AP_Param::Info Copter::var_info[] = {
     // @Description: Allows setting an individual MAVLink system id for this vehicle to distinguish it from others on the same network
     // @Range: 1 255
     // @User: Advanced
+    // @RebootRequired: True
     GSCALAR(sysid_this_mav, "SYSID_THISMAV",   MAV_SYSTEM_ID),
 
     // @Param: SYSID_MYGCS
diff --git a/ArduPlane/Parameters.cpp b/ArduPlane/Parameters.cpp
index 166b141c87bf8..5fa0b447ceeef 100644
--- a/ArduPlane/Parameters.cpp
+++ b/ArduPlane/Parameters.cpp
@@ -27,6 +27,7 @@ const AP_Param::Info Plane::var_info[] = {
     // @Range: 1 255
     // @Increment: 1
     // @User: Advanced
+    // @RebootRequired: True
     GSCALAR(sysid_my_gcs,           "SYSID_MYGCS",    255),
 
     // AP_SerialManager was here
diff --git a/ArduSub/Parameters.cpp b/ArduSub/Parameters.cpp
index 2be5f65171e20..157d879c40b3b 100644
--- a/ArduSub/Parameters.cpp
+++ b/ArduSub/Parameters.cpp
@@ -44,6 +44,7 @@ const AP_Param::Info Sub::var_info[] = {
     // @Description: Allows setting an individual MAVLink system id for this vehicle to distinguish it from others on the same network
     // @Range: 1 255
     // @User: Advanced
+    // @RebootRequired: True
     GSCALAR(sysid_this_mav, "SYSID_THISMAV",   MAV_SYSTEM_ID),
 
     // @Param: SYSID_MYGCS
diff --git a/Blimp/Parameters.cpp b/Blimp/Parameters.cpp
index 70d5e76e7eb91..89dd040e006e9 100644
--- a/Blimp/Parameters.cpp
+++ b/Blimp/Parameters.cpp
@@ -35,6 +35,7 @@ const AP_Param::Info Blimp::var_info[] = {
     // @Description: Allows setting an individual MAVLink system id for this vehicle to distinguish it from others on the same network
     // @Range: 1 255
     // @User: Advanced
+    // @RebootRequired: True
     GSCALAR(sysid_this_mav, "SYSID_THISMAV",   MAV_SYSTEM_ID),
 
     // @Param: SYSID_MYGCS
diff --git a/Rover/Parameters.cpp b/Rover/Parameters.cpp
index f997e15797720..55bd46420e1b2 100644
--- a/Rover/Parameters.cpp
+++ b/Rover/Parameters.cpp
@@ -38,6 +38,7 @@ const AP_Param::Info Rover::var_info[] = {
     // @Description: Allows setting an individual MAVLink system id for this vehicle to distinguish it from others on the same network
     // @Range: 1 255
     // @User: Advanced
+    // @RebootRequired: True
     GSCALAR(sysid_this_mav,         "SYSID_THISMAV",    MAV_SYSTEM_ID),
 
     // @Param: SYSID_MYGCS
diff --git a/Tools/AP_Periph/Parameters.cpp b/Tools/AP_Periph/Parameters.cpp
index 3b00ce8bafc85..cebb653b2e4b3 100644
--- a/Tools/AP_Periph/Parameters.cpp
+++ b/Tools/AP_Periph/Parameters.cpp
@@ -464,6 +464,7 @@ const AP_Param::Info AP_Periph_FW::var_info[] = {
     // @Description: Allows setting an individual system id for this vehicle to distinguish it from others on the same network
     // @Range: 1 255
     // @User: Advanced
+    // @RebootRequired: True
     GSCALAR(sysid_this_mav,         "SYSID_THISMAV",  MAV_SYSTEM_ID),
 #endif