diff --git a/src/command.h b/src/command.h
--- a/src/command.h
+++ b/src/command.h
@@ -149,6 +149,7 @@ enum {
 	CMD_ADD_VEHICLE_GROUP            = 123,
 	CMD_ADD_SHARED_VEHICLE_GROUP     = 124,
 	CMD_REMOVE_ALL_VEHICLES_GROUP    = 125,
+	CMD_SET_GROUP_REPLACE_PROTECTION = 126,
 };
 
 enum {