diff --git a/server/tools/protobuild/metatable.proto b/server/tools/protobuild/metatable.proto
index ca0e2b1a..344ba887 100755
--- a/server/tools/protobuild/metatable.proto
+++ b/server/tools/protobuild/metatable.proto
@@ -38,6 +38,7 @@ message Map
     optional int32 init_gas_ring = 15;
     optional string airraids = 16;
     optional string car_num_limit = 17;
+    optional float scale = 18;
 }
 
 message MapThing