diff --git a/core/fpdfapi/font/cpdf_cid2unicodemap.cpp b/core/fpdfapi/font/cpdf_cid2unicodemap.cpp
index b2e435b..f36834d 100644
--- a/core/fpdfapi/font/cpdf_cid2unicodemap.cpp
+++ b/core/fpdfapi/font/cpdf_cid2unicodemap.cpp
@@ -28,13 +28,10 @@
   return 0;
 }
 
-void CPDF_CID2UnicodeMap::Load(CPDF_CMapManager* pMgr,
-                               CIDSet charset,
-                               bool bPromptCJK) {
+void CPDF_CID2UnicodeMap::Load(CPDF_CMapManager* pMgr, CIDSet charset) {
   m_Charset = charset;
 
   CPDF_FontGlobals* pFontGlobals =
       CPDF_ModuleMgr::Get()->GetPageModule()->GetFontGlobals();
-
   m_pEmbeddedMap = pFontGlobals->GetEmbeddedToUnicode(charset);
 }
diff --git a/core/fpdfapi/font/cpdf_cid2unicodemap.h b/core/fpdfapi/font/cpdf_cid2unicodemap.h
index 73c5059..16467f3 100644
--- a/core/fpdfapi/font/cpdf_cid2unicodemap.h
+++ b/core/fpdfapi/font/cpdf_cid2unicodemap.h
@@ -19,7 +19,7 @@
 
   bool IsLoaded() const;
   wchar_t UnicodeFromCID(uint16_t CID) const;
-  void Load(CPDF_CMapManager* pMgr, CIDSet charset, bool bPromptCJK);
+  void Load(CPDF_CMapManager* pMgr, CIDSet charset);
 
  private:
   CIDSet m_Charset;
diff --git a/core/fpdfapi/font/cpdf_cidfont.cpp b/core/fpdfapi/font/cpdf_cidfont.cpp
index a423daa..98478c3 100644
--- a/core/fpdfapi/font/cpdf_cidfont.cpp
+++ b/core/fpdfapi/font/cpdf_cidfont.cpp
@@ -362,8 +362,7 @@
   CPDF_CMapManager* manager = GetFontGlobals()->GetCMapManager();
   if (pEncoding->IsName()) {
     ByteString cmap = pEncoding->GetString();
-    bool bPromptCJK = m_pFontFile && m_bType1;
-    m_pCMap = manager->GetPredefinedCMap(cmap, bPromptCJK);
+    m_pCMap = manager->GetPredefinedCMap(cmap);
     if (!m_pCMap)
       return false;
   } else if (CPDF_Stream* pStream = pEncoding->AsStream()) {
@@ -384,9 +383,7 @@
     }
   }
   if (m_Charset != CIDSET_UNKNOWN) {
-    bool bPromptCJK = !m_pFontFile && (m_pCMap->GetCoding() == CIDCODING_CID ||
-                                       pCIDFontDict->KeyExist("W"));
-    m_pCID2UnicodeMap = manager->GetCID2UnicodeMap(m_Charset, bPromptCJK);
+    m_pCID2UnicodeMap = manager->GetCID2UnicodeMap(m_Charset);
   }
   if (m_Font.GetFace()) {
     if (m_bType1)
@@ -832,8 +829,8 @@
   m_Charset = CIDSET_GB1;
 
   CPDF_CMapManager* manager = GetFontGlobals()->GetCMapManager();
-  m_pCMap = manager->GetPredefinedCMap("GBK-EUC-H", false);
-  m_pCID2UnicodeMap = manager->GetCID2UnicodeMap(m_Charset, false);
+  m_pCMap = manager->GetPredefinedCMap("GBK-EUC-H");
+  m_pCID2UnicodeMap = manager->GetCID2UnicodeMap(m_Charset);
   if (!IsEmbedded())
     LoadSubstFont();
 
diff --git a/core/fpdfapi/font/cpdf_cmap.cpp b/core/fpdfapi/font/cpdf_cmap.cpp
index ee8f264..3e57322 100644
--- a/core/fpdfapi/font/cpdf_cmap.cpp
+++ b/core/fpdfapi/font/cpdf_cmap.cpp
@@ -248,8 +248,7 @@
 CPDF_CMap::~CPDF_CMap() {}
 
 void CPDF_CMap::LoadPredefined(CPDF_CMapManager* pMgr,
-                               const ByteString& bsName,
-                               bool bPromptCJK) {
+                               const ByteString& bsName) {
   m_PredefinedCMap = bsName;
   if (m_PredefinedCMap == "Identity-H" || m_PredefinedCMap == "Identity-V") {
     m_Coding = CIDCODING_CID;
diff --git a/core/fpdfapi/font/cpdf_cmap.h b/core/fpdfapi/font/cpdf_cmap.h
index b3c09d5..45053bd 100644
--- a/core/fpdfapi/font/cpdf_cmap.h
+++ b/core/fpdfapi/font/cpdf_cmap.h
@@ -51,9 +51,7 @@
   template <typename T, typename... Args>
   friend RetainPtr<T> pdfium::MakeRetain(Args&&... args);
 
-  void LoadPredefined(CPDF_CMapManager* pMgr,
-                      const ByteString& name,
-                      bool bPromptCJK);
+  void LoadPredefined(CPDF_CMapManager* pMgr, const ByteString& name);
   void LoadEmbedded(pdfium::span<const uint8_t> data);
 
   bool IsLoaded() const { return m_bLoaded; }
diff --git a/core/fpdfapi/font/cpdf_cmapmanager.cpp b/core/fpdfapi/font/cpdf_cmapmanager.cpp
index 62a2013..c33759c 100644
--- a/core/fpdfapi/font/cpdf_cmapmanager.cpp
+++ b/core/fpdfapi/font/cpdf_cmapmanager.cpp
@@ -16,41 +16,38 @@
 
 CPDF_CMapManager::~CPDF_CMapManager() {}
 
-RetainPtr<CPDF_CMap> CPDF_CMapManager::GetPredefinedCMap(const ByteString& name,
-                                                         bool bPromptCJK) {
+RetainPtr<CPDF_CMap> CPDF_CMapManager::GetPredefinedCMap(
+    const ByteString& name) {
   auto it = m_CMaps.find(name);
   if (it != m_CMaps.end())
     return it->second;
 
-  RetainPtr<CPDF_CMap> pCMap = LoadPredefinedCMap(name, bPromptCJK);
+  RetainPtr<CPDF_CMap> pCMap = LoadPredefinedCMap(name);
   if (!name.IsEmpty())
     m_CMaps[name] = pCMap;
 
   return pCMap;
 }
 
-RetainPtr<CPDF_CMap> CPDF_CMapManager::LoadPredefinedCMap(ByteString name,
-                                                          bool bPromptCJK) {
+RetainPtr<CPDF_CMap> CPDF_CMapManager::LoadPredefinedCMap(ByteString name) {
   if (!name.IsEmpty() && name[0] == '/')
     name = name.Right(name.GetLength() - 1);
 
   auto pCMap = pdfium::MakeRetain<CPDF_CMap>();
-  pCMap->LoadPredefined(this, name, bPromptCJK);
+  pCMap->LoadPredefined(this, name);
   return pCMap;
 }
 
-CPDF_CID2UnicodeMap* CPDF_CMapManager::GetCID2UnicodeMap(CIDSet charset,
-                                                         bool bPromptCJK) {
+CPDF_CID2UnicodeMap* CPDF_CMapManager::GetCID2UnicodeMap(CIDSet charset) {
   if (!m_CID2UnicodeMaps[charset])
-    m_CID2UnicodeMaps[charset] = LoadCID2UnicodeMap(charset, bPromptCJK);
+    m_CID2UnicodeMaps[charset] = LoadCID2UnicodeMap(charset);
 
   return m_CID2UnicodeMaps[charset].get();
 }
 
 std::unique_ptr<CPDF_CID2UnicodeMap> CPDF_CMapManager::LoadCID2UnicodeMap(
-    CIDSet charset,
-    bool bPromptCJK) {
+    CIDSet charset) {
   auto pMap = pdfium::MakeUnique<CPDF_CID2UnicodeMap>();
-  pMap->Load(this, charset, bPromptCJK);
+  pMap->Load(this, charset);
   return pMap;
 }
diff --git a/core/fpdfapi/font/cpdf_cmapmanager.h b/core/fpdfapi/font/cpdf_cmapmanager.h
index 47a0be0..af61e3f 100644
--- a/core/fpdfapi/font/cpdf_cmapmanager.h
+++ b/core/fpdfapi/font/cpdf_cmapmanager.h
@@ -19,14 +19,12 @@
   CPDF_CMapManager();
   ~CPDF_CMapManager();
 
-  RetainPtr<CPDF_CMap> GetPredefinedCMap(const ByteString& name,
-                                         bool bPromptCJK);
-  CPDF_CID2UnicodeMap* GetCID2UnicodeMap(CIDSet charset, bool bPromptCJK);
+  RetainPtr<CPDF_CMap> GetPredefinedCMap(const ByteString& name);
+  CPDF_CID2UnicodeMap* GetCID2UnicodeMap(CIDSet charset);
 
  private:
-  RetainPtr<CPDF_CMap> LoadPredefinedCMap(ByteString name, bool bPromptCJK);
-  std::unique_ptr<CPDF_CID2UnicodeMap> LoadCID2UnicodeMap(CIDSet charset,
-                                                          bool bPromptCJK);
+  RetainPtr<CPDF_CMap> LoadPredefinedCMap(ByteString name);
+  std::unique_ptr<CPDF_CID2UnicodeMap> LoadCID2UnicodeMap(CIDSet charset);
 
   std::map<ByteString, RetainPtr<CPDF_CMap>> m_CMaps;
   std::unique_ptr<CPDF_CID2UnicodeMap> m_CID2UnicodeMaps[6];
diff --git a/core/fpdfapi/font/cpdf_tounicodemap.cpp b/core/fpdfapi/font/cpdf_tounicodemap.cpp
index e891731..5362e48 100644
--- a/core/fpdfapi/font/cpdf_tounicodemap.cpp
+++ b/core/fpdfapi/font/cpdf_tounicodemap.cpp
@@ -227,7 +227,7 @@
                      ->GetPageModule()
                      ->GetFontGlobals()
                      ->GetCMapManager()
-                     ->GetCID2UnicodeMap(cid_set, false);
+                     ->GetCID2UnicodeMap(cid_set);
   } else {
     m_pBaseMap = nullptr;
   }