diff --git a/include/mbgl/storage/default_file_source.hpp b/include/mbgl/storage/default_file_source.hpp
index 14b4db6ef..7aab54f73 100644
--- a/include/mbgl/storage/default_file_source.hpp
+++ b/include/mbgl/storage/default_file_source.hpp
@@ -29,7 +29,6 @@ public:
 
     void abort(const Environment &env) override;
 
-    enum class CacheHint : uint8_t { Full, Refresh, No };
     void notify(SharedRequestBase *sharedRequest, const std::set<Request *> &observers,
                 std::shared_ptr<const Response> response, FileCache::Hint hint);