diff --git a/fpdfsdk/pwl/cpwl_list_box.cpp b/fpdfsdk/pwl/cpwl_list_box.cpp
index 5100b57..8b3eca4 100644
--- a/fpdfsdk/pwl/cpwl_list_box.cpp
+++ b/fpdfsdk/pwl/cpwl_list_box.cpp
@@ -337,10 +337,6 @@
   return m_pListCtrl->GetCount();
 }
 
-int32_t CPWL_ListBox::FindNext(int32_t nIndex, wchar_t nChar) const {
-  return m_pListCtrl->FindNext(nIndex, nChar);
-}
-
 CFX_FloatRect CPWL_ListBox::GetContentRect() const {
   return m_pListCtrl->GetContentRect();
 }
diff --git a/fpdfsdk/pwl/cpwl_list_box.h b/fpdfsdk/pwl/cpwl_list_box.h
index 4211443..642cb12 100644
--- a/fpdfsdk/pwl/cpwl_list_box.h
+++ b/fpdfsdk/pwl/cpwl_list_box.h
@@ -72,7 +72,6 @@
   int32_t GetCurSel() const;
   bool IsItemSelected(int32_t nItemIndex) const;
   int32_t GetTopVisibleIndex() const;
-  int32_t FindNext(int32_t nIndex, wchar_t nChar) const;
   CFX_FloatRect GetContentRect() const;
   float GetFirstHeight() const;
   CFX_FloatRect GetListRect() const;