3 files changed, 3 insertions, 3 deletions
diff --git a/include/mbgl/map/raster_tile_data.hpp b/include/mbgl/map/raster_tile_data.hpp
index 8ae898f989..97317537b9 100644
--- a/include/mbgl/map/raster_tile_data.hpp
+++ b/include/mbgl/map/raster_tile_data.hpp
@@ -16,7 +16,7 @@ class RasterTileData : public TileData {
     friend class TileParser;
 
 public:
-    RasterTileData(Tile::ID id, Map &map, const util::ptr<SourceInfo> &source);
+    RasterTileData(Tile::ID const& id, Map &map, const util::ptr<SourceInfo> &source);
     ~RasterTileData();
 
     virtual void parse();
diff --git a/include/mbgl/map/tile_data.hpp b/include/mbgl/map/tile_data.hpp
index 70297c7f34..d6666f2f70 100644
--- a/include/mbgl/map/tile_data.hpp
+++ b/include/mbgl/map/tile_data.hpp
@@ -40,7 +40,7 @@ public:
     };
 
 public:
-    TileData(Tile::ID id, Map &map, const util::ptr<SourceInfo> &source);
+    TileData(Tile::ID const& id, Map &map, const util::ptr<SourceInfo> &source);
     ~TileData();
 
     void request();
diff --git a/include/mbgl/map/vector_tile_data.hpp b/include/mbgl/map/vector_tile_data.hpp
index 9f611fd69c..070456af80 100644
--- a/include/mbgl/map/vector_tile_data.hpp
+++ b/include/mbgl/map/vector_tile_data.hpp
@@ -26,7 +26,7 @@ class VectorTileData : public TileData {
     friend class TileParser;
 
 public:
-    VectorTileData(Tile::ID id, Map &map, const util::ptr<SourceInfo> &source);
+    VectorTileData(Tile::ID const& id, Map &map, const util::ptr<SourceInfo> &source);
     ~VectorTileData();
     virtual void parse();
     virtual void render(Painter &painter, util::ptr<StyleLayer> layer_desc, const mat4 &matrix);