1 files changed, 8 insertions, 5 deletions
diff --git a/src/mbgl/tile/tile_cache.cpp b/src/mbgl/tile/tile_cache.cpp
index 0f0a231d54..15e8a38ce5 100644
--- a/src/mbgl/tile/tile_cache.cpp
+++ b/src/mbgl/tile/tile_cache.cpp
@@ -17,10 +17,13 @@ void TileCache::setSize(size_t size_) {
     assert(orderedKeys.size() <= size);
 }
 
-void TileCache::add(const OverscaledTileID& key, std::shared_ptr<TileData> data) {
+void TileCache::add(const OverscaledTileID& key, std::unique_ptr<TileData> data) {
+    if (!data->isReady() || !size) {
+        return;
+    }
 
     // insert new or query existing data
-    if (tiles.emplace(key, data).second) {
+    if (tiles.emplace(key, std::move(data)).second) {
         // remove existing data key
         orderedKeys.remove(key);
     }
@@ -36,13 +39,13 @@ void TileCache::add(const OverscaledTileID& key, std::shared_ptr<TileData> data)
     assert(orderedKeys.size() <= size);
 };
 
-std::shared_ptr<TileData> TileCache::get(const OverscaledTileID& key) {
+std::unique_ptr<TileData> TileCache::get(const OverscaledTileID& key) {
 
-    std::shared_ptr<TileData> data;
+    std::unique_ptr<TileData> data;
 
     auto it = tiles.find(key);
     if (it != tiles.end()) {
-        data = it->second;
+        data = std::move(it->second);
         tiles.erase(it);
         orderedKeys.remove(key);
         assert(data->isReady());