diff --git a/include/mbgl/map/map.hpp b/include/mbgl/map/map.hpp
index ad33865cd..ab5311741 100644
--- a/include/mbgl/map/map.hpp
+++ b/include/mbgl/map/map.hpp
@@ -126,7 +126,6 @@ public:
 
 public:
     inline const TransformState &getState() const { return state; }
-    inline util::ptr<FileSource> getFileSource() const { return fileSource; }
     inline util::ptr<Style> getStyle() const { return style; }
     inline GlyphAtlas & getGlyphAtlas() { return glyphAtlas; }
     inline util::ptr<GlyphStore> getGlyphStore() { return glyphStore; }
diff --git a/include/mbgl/map/source.hpp b/include/mbgl/map/source.hpp
index e74ddb990..46fcbdaf6 100644
--- a/include/mbgl/map/source.hpp
+++ b/include/mbgl/map/source.hpp
@@ -18,6 +18,7 @@
 namespace mbgl {
 
 class Map;
+class FileSource;
 class Painter;
 class StyleLayer;
 class TransformState;
@@ -27,9 +28,9 @@ class Source : public std::enable_shared_from_this<Source>, private util::noncop
 public:
     Source(const util::ptr<SourceInfo>& info);
 
-    void load(Map &map);
+    void load(Map&, FileSource&);
+    bool update(Map&, FileSource&);
 
-    bool update(Map &map);
     void updateMatrices(const mat4 &projMatrix, const TransformState &transform);
     void drawClippingMasks(Painter &painter);
     size_t getTileCount() const;
@@ -47,9 +48,9 @@ private:
     int32_t coveringZoomLevel(const TransformState&) const;
     std::forward_list<Tile::ID> coveringTiles(const TransformState&) const;
 
-    bool updateTiles(Map &map);
+    bool updateTiles(Map&, FileSource&);
 
-    TileData::State addTile(Map &map, const Tile::ID& id);
+    TileData::State addTile(Map&, FileSource&, const Tile::ID&);
     TileData::State hasTile(const Tile::ID& id);
 
     double getZoom(const TransformState &state) const;
diff --git a/include/mbgl/map/tile_data.hpp b/include/mbgl/map/tile_data.hpp
index d6666f2f7..baae542e4 100644
--- a/include/mbgl/map/tile_data.hpp
+++ b/include/mbgl/map/tile_data.hpp
@@ -16,6 +16,7 @@
 namespace mbgl {
 
 class Map;
+class FileSource;
 class Painter;
 class SourceInfo;
 class StyleLayer;
@@ -43,7 +44,7 @@ public:
     TileData(Tile::ID const& id, Map &map, const util::ptr<SourceInfo> &source);
     ~TileData();
 
-    void request();
+    void request(FileSource&);
     void cancel();
     void reparse();
     const std::string toString() const;
diff --git a/src/map/map.cpp b/src/map/map.cpp
index 73867b229..4ed1b6465 100644
--- a/src/map/map.cpp
+++ b/src/map/map.cpp
@@ -607,7 +607,7 @@ void Map::updateSources() {
         if (style_source->enabled) {
             if (!style_source->source) {
                 style_source->source = std::make_shared<Source>(style_source->info);
-                style_source->source->load(*this);
+                style_source->source->load(*this, *fileSource);
             }
         } else {
             style_source->source.reset();
@@ -642,7 +642,7 @@ void Map::updateSources(const util::ptr<StyleLayerGroup> &group) {
 
 void Map::updateTiles() {
     for (const util::ptr<StyleSource> &source : getActiveSources()) {
-        source->source->update(*this);
+        source->source->update(*this, *fileSource);
     }
 }
 
diff --git a/src/map/source.cpp b/src/map/source.cpp
index 9c0f7caf2..957afd6fd 100644
--- a/src/map/source.cpp
+++ b/src/map/source.cpp
@@ -30,7 +30,7 @@ Source::Source(const util::ptr<SourceInfo>& info_)
 // Note: This is a separate function that must be called exactly once after creation
 // The reason this isn't part of the constructor is that calling shared_from_this() in
 // the constructor fails.
-void Source::load(Map& map) {
+void Source::load(Map& map, FileSource& fileSource) {
     if (info->url.empty()) {
         loaded = true;
         return;
@@ -39,7 +39,7 @@ void Source::load(Map& map) {
     std::string url = util::mapbox::normalizeSourceURL(info->url, map.getAccessToken());
     util::ptr<Source> source = shared_from_this();
 
-    map.getFileSource()->request(ResourceType::JSON, url)->onload([source, &map](const Response &res) {
+    fileSource.request(ResourceType::JSON, url)->onload([source, &map](const Response &res) {
         if (res.code != 200) {
             Log::Warning(Event::General, "failed to load source TileJSON");
             return;
@@ -61,9 +61,9 @@ void Source::load(Map& map) {
     });
 }
 
-bool Source::update(Map &map) {
+bool Source::update(Map& map, FileSource& fileSource) {
     if (loaded && map.getTime() > updated) {
-        return updateTiles(map);
+        return updateTiles(map, fileSource);
     } else {
         return false;
     }
@@ -159,7 +159,7 @@ TileData::State Source::hasTile(const Tile::ID& id) {
     return TileData::State::invalid;
 }
 
-TileData::State Source::addTile(Map &map, const Tile::ID& id) {
+TileData::State Source::addTile(Map& map, FileSource& fileSource, const Tile::ID& id) {
     const TileData::State state = hasTile(id);
 
     if (state != TileData::State::invalid) {
@@ -194,7 +194,7 @@ TileData::State Source::addTile(Map &map, const Tile::ID& id) {
             throw std::runtime_error("source type not implemented");
         }
 
-        new_tile.data->request();
+        new_tile.data->request(fileSource);
         tile_data.emplace(new_tile.data->id, new_tile.data);
     }
 
@@ -281,7 +281,7 @@ bool Source::findLoadedParent(const Tile::ID& id, int32_t minCoveringZoom, std::
     return false;
 }
 
-bool Source::updateTiles(Map &map) {
+bool Source::updateTiles(Map& map, FileSource& fileSource) {
     bool changed = false;
 
     int32_t zoom = std::floor(getZoom(map.getState()));
@@ -298,7 +298,7 @@ bool Source::updateTiles(Map &map) {
 
     // Add existing child/parent tiles if the actual tile is not yet loaded
     for (const Tile::ID& id : required) {
-        const TileData::State state = addTile(map, id);
+        const TileData::State state = addTile(map, fileSource, id);
 
         if (state != TileData::State::parsed) {
             // The tile we require is not yet loaded. Try to find a parent or
diff --git a/src/map/tile_data.cpp b/src/map/tile_data.cpp
index 44628e8b3..9ff694bf3 100644
--- a/src/map/tile_data.cpp
+++ b/src/map/tile_data.cpp
@@ -28,7 +28,7 @@ const std::string TileData::toString() const {
     return util::sprintf<32>("[tile %d/%d/%d]", id.z, id.x, id.y);
 }
 
-void TileData::request() {
+void TileData::request(FileSource& fileSource) {
     if (source->tiles.empty())
         return;
 
@@ -45,7 +45,7 @@ void TileData::request() {
 
     // Note: Somehow this feels slower than the change to request_http()
     std::weak_ptr<TileData> weak_tile = shared_from_this();
-    req = map.getFileSource()->request(ResourceType::Tile, url);
+    req = fileSource.request(ResourceType::Tile, url);
     req->onload([weak_tile, url](const Response &res) {
         util::ptr<TileData> tile = weak_tile.lock();
         if (!tile || tile->state == State::obsolete) {