1 files changed, 1 insertions, 1 deletions
diff --git a/core/fpdfapi/page/cpdf_generalstate.h b/core/fpdfapi/page/cpdf_generalstate.h
index 4a101b99de..9ee20db8a5 100644
--- a/core/fpdfapi/page/cpdf_generalstate.h
+++ b/core/fpdfapi/page/cpdf_generalstate.h
@@ -77,7 +77,7 @@ class CPDF_GeneralState {
   CFX_Matrix* GetMutableMatrix();
 
  private:
-  class StateData : public Retainable {
+  class StateData final : public Retainable {
    public:
     StateData();
     StateData(const StateData& that);