1 files changed, 1 insertions, 1 deletions
diff --git a/fpdfsdk/pdfwindow/cpwl_combo_box.h b/fpdfsdk/pdfwindow/cpwl_combo_box.h
index 549374f3e8..f8da84ad2e 100644
--- a/fpdfsdk/pdfwindow/cpwl_combo_box.h
+++ b/fpdfsdk/pdfwindow/cpwl_combo_box.h
@@ -40,7 +40,7 @@ class CPWL_CBButton : public CPWL_Wnd {
   ~CPWL_CBButton() override {}
 
   // CPWL_Wnd
-  void GetThisAppearanceStream(CFX_ByteTextBuf& sAppStream) override;
+  void GetThisAppearanceStream(std::ostringstream* psAppStream) override;
   void DrawThisAppearance(CFX_RenderDevice* pDevice,
                           CFX_Matrix* pUser2Device) override;
   bool OnLButtonDown(const CFX_PointF& point, uint32_t nFlag) override;