diff --git a/core/fpdfapi/parser/cpdf_cross_ref_avail.cpp b/core/fpdfapi/parser/cpdf_cross_ref_avail.cpp
index a5f7cbf..c52deeb 100644
--- a/core/fpdfapi/parser/cpdf_cross_ref_avail.cpp
+++ b/core/fpdfapi/parser/cpdf_cross_ref_avail.cpp
@@ -85,7 +85,7 @@
   }
   parser_->SetPos(cross_refs_for_check_.front());
 
-  const ByteString first_word = parser_->PeekNextWord(nullptr);
+  const ByteString first_word = parser_->PeekNextWord();
   if (CheckReadProblems())
     return false;
 
diff --git a/core/fpdfapi/parser/cpdf_syntax_parser.cpp b/core/fpdfapi/parser/cpdf_syntax_parser.cpp
index 334fab5..3b65133 100644
--- a/core/fpdfapi/parser/cpdf_syntax_parser.cpp
+++ b/core/fpdfapi/parser/cpdf_syntax_parser.cpp
@@ -475,9 +475,9 @@
   return ret;
 }
 
-ByteString CPDF_SyntaxParser::PeekNextWord(bool* bIsNumber) {
+ByteString CPDF_SyntaxParser::PeekNextWord() {
   AutoRestorer<FX_FILESIZE> save_pos(&m_Pos);
-  return GetNextWord(bIsNumber);
+  return GetNextWord(nullptr);
 }
 
 ByteString CPDF_SyntaxParser::GetKeyword() {
diff --git a/core/fpdfapi/parser/cpdf_syntax_parser.h b/core/fpdfapi/parser/cpdf_syntax_parser.h
index abcb50e..3d474fa 100644
--- a/core/fpdfapi/parser/cpdf_syntax_parser.h
+++ b/core/fpdfapi/parser/cpdf_syntax_parser.h
@@ -62,7 +62,7 @@
   bool ReadBlock(uint8_t* pBuf, uint32_t size);
   bool GetCharAt(FX_FILESIZE pos, uint8_t& ch);
   ByteString GetNextWord(bool* bIsNumber);
-  ByteString PeekNextWord(bool* bIsNumber);
+  ByteString PeekNextWord();
 
   const RetainPtr<CPDF_ReadValidator>& GetValidator() const {
     return m_pFileAccess;
diff --git a/core/fpdfapi/parser/cpdf_syntax_parser_unittest.cpp b/core/fpdfapi/parser/cpdf_syntax_parser_unittest.cpp
index 361f3d1..47cec95 100644
--- a/core/fpdfapi/parser/cpdf_syntax_parser_unittest.cpp
+++ b/core/fpdfapi/parser/cpdf_syntax_parser_unittest.cpp
@@ -156,6 +156,6 @@
 TEST(cpdf_syntax_parser, PeekNextWord) {
   static const uint8_t data[] = "    WORD ";
   CPDF_SyntaxParser parser(pdfium::MakeRetain<CFX_ReadOnlyMemoryStream>(data));
-  EXPECT_EQ("WORD", parser.PeekNextWord(nullptr));
+  EXPECT_EQ("WORD", parser.PeekNextWord());
   EXPECT_EQ("WORD", parser.GetNextWord(nullptr));
 }