1 files changed, 1 insertions, 1 deletions
diff --git a/core/fpdfapi/page/cpdf_textstate.h b/core/fpdfapi/page/cpdf_textstate.h
index aa128072b6..c1c3ba8015 100644
--- a/core/fpdfapi/page/cpdf_textstate.h
+++ b/core/fpdfapi/page/cpdf_textstate.h
@@ -59,7 +59,7 @@ class CPDF_TextState {
   float* GetMutableCTM();
 
  private:
-  class TextData : public Retainable {
+  class TextData final : public Retainable {
    public:
     TextData();
     TextData(const TextData& src);