1 files changed, 1 insertions, 1 deletions
diff --git a/core/fpdfdoc/cpdf_occontext.h b/core/fpdfdoc/cpdf_occontext.h
index 67763610f4..16b28ba06f 100644
--- a/core/fpdfdoc/cpdf_occontext.h
+++ b/core/fpdfdoc/cpdf_occontext.h
@@ -17,7 +17,7 @@ class CPDF_Dictionary;
 class CPDF_Document;
 class CPDF_PageObject;
 
-class CPDF_OCContext : public Retainable {
+class CPDF_OCContext final : public Retainable {
  public:
   enum UsageType { View = 0, Design, Print, Export };