1 files changed, 4 insertions, 4 deletions
diff --git a/core/fpdfdoc/cpdf_bookmarktree.cpp b/core/fpdfdoc/cpdf_bookmarktree.cpp
index 33c9f3d15b..3b178f01b1 100644
--- a/core/fpdfdoc/cpdf_bookmarktree.cpp
+++ b/core/fpdfdoc/cpdf_bookmarktree.cpp
@@ -14,7 +14,7 @@ CPDF_BookmarkTree::~CPDF_BookmarkTree() {}
 
 CPDF_Bookmark CPDF_BookmarkTree::GetFirstChild(
     const CPDF_Bookmark& parent) const {
-  CPDF_Dictionary* pParentDict = parent.GetDict();
+  const CPDF_Dictionary* pParentDict = parent.GetDict();
   if (pParentDict)
     return CPDF_Bookmark(pParentDict->GetDictFor("First"));
 
@@ -22,17 +22,17 @@ CPDF_Bookmark CPDF_BookmarkTree::GetFirstChild(
   if (!pRoot)
     return CPDF_Bookmark();
 
-  CPDF_Dictionary* pOutlines = pRoot->GetDictFor("Outlines");
+  const CPDF_Dictionary* pOutlines = pRoot->GetDictFor("Outlines");
   return pOutlines ? CPDF_Bookmark(pOutlines->GetDictFor("First"))
                    : CPDF_Bookmark();
 }
 
 CPDF_Bookmark CPDF_BookmarkTree::GetNextSibling(
     const CPDF_Bookmark& bookmark) const {
-  CPDF_Dictionary* pDict = bookmark.GetDict();
+  const CPDF_Dictionary* pDict = bookmark.GetDict();
   if (!pDict)
     return CPDF_Bookmark();
 
-  CPDF_Dictionary* pNext = pDict->GetDictFor("Next");
+  const CPDF_Dictionary* pNext = pDict->GetDictFor("Next");
   return pNext == pDict ? CPDF_Bookmark() : CPDF_Bookmark(pNext);
 }