diff --git a/src/lib/ems_stream_server.c b/src/lib/ems_stream_server.c
index e40c314..0f16e03 100644
--- a/src/lib/ems_stream_server.c
+++ b/src/lib/ems_stream_server.c
@@ -525,7 +525,7 @@ _stream_request_data_send(Ems_Stream_Client *client)
         client->file_map = eina_file_map_new(client->file_stream, 
                                              EINA_FILE_SEQUENTIAL,
                                              client->file_map_start,
-                                             client->file_map_end - client->file_map_start);
+                                             EMS_FILE_MAP_SIZE);
 
         if (!client->file_map)
           {