1 files changed, 2 insertions, 2 deletions
diff --git a/fpdfsdk/fpdf_dataavail_embeddertest.cpp b/fpdfsdk/fpdf_dataavail_embeddertest.cpp
index ba7726613e..08bc6c0450 100644
--- a/fpdfsdk/fpdf_dataavail_embeddertest.cpp
+++ b/fpdfsdk/fpdf_dataavail_embeddertest.cpp
@@ -20,7 +20,7 @@
 
 namespace {
 
-class MockDownloadHints : public FX_DOWNLOADHINTS {
+class MockDownloadHints final : public FX_DOWNLOADHINTS {
  public:
   static void SAddSegment(FX_DOWNLOADHINTS* pThis, size_t offset, size_t size) {
   }
@@ -33,7 +33,7 @@ class MockDownloadHints : public FX_DOWNLOADHINTS {
   ~MockDownloadHints() {}
 };
 
-class TestAsyncLoader : public FX_DOWNLOADHINTS, FX_FILEAVAIL {
+class TestAsyncLoader final : public FX_DOWNLOADHINTS, FX_FILEAVAIL {
  public:
   explicit TestAsyncLoader(const std::string& file_name) {
     std::string file_path;