diff --git a/maps_extended.proto b/maps_extended.proto
index fbb406b..1feb90e 100644
--- a/maps_extended.proto
+++ b/maps_extended.proto
@@ -12,8 +12,11 @@ service MapsService {
   rpc Delete(MapId) returns (NullResponse);
   rpc List(ListRequest) returns (MapList);
   rpc IncrementLoadCount(MapId) returns (NullResponse);
+  rpc GetSnmfDownloadUrl(MapId) returns (SnmfDownloadUrl);
 }
 
+message SnmfDownloadUrl { string Url = 1; }
+
 message MapIdList { repeated int64 ID = 1; }
 
 message MapId { int64 ID = 1; }