diff --git a/core/fpdfapi/page/cpdf_streamcontentparser.cpp b/core/fpdfapi/page/cpdf_streamcontentparser.cpp
index 8885760..83ed23d 100644
--- a/core/fpdfapi/page/cpdf_streamcontentparser.cpp
+++ b/core/fpdfapi/page/cpdf_streamcontentparser.cpp
@@ -269,7 +269,6 @@
       m_ParamStartPos(0),
       m_ParamCount(0),
       m_pCurStates(pdfium::MakeUnique<CPDF_AllStates>()),
-      m_DefFontSize(0),
       m_PathStartX(0.0f),
       m_PathStartY(0.0f),
       m_PathCurrentX(0.0f),
@@ -1125,8 +1124,10 @@
 
 void CPDF_StreamContentParser::Handle_SetFont() {
   float fs = GetNumber(0);
-  if (fs == 0)
-    fs = m_DefFontSize;
+  if (fs == 0) {
+    constexpr float kDefaultFontSize = 0.0f;
+    fs = kDefaultFontSize;
+  }
 
   m_pCurStates->m_TextState.SetFontSize(fs);
   RetainPtr<CPDF_Font> pFont = FindFont(GetString(1));
diff --git a/core/fpdfapi/page/cpdf_streamcontentparser.h b/core/fpdfapi/page/cpdf_streamcontentparser.h
index cd47938..ae05968 100644
--- a/core/fpdfapi/page/cpdf_streamcontentparser.h
+++ b/core/fpdfapi/page/cpdf_streamcontentparser.h
@@ -217,7 +217,6 @@
   std::stack<std::unique_ptr<CPDF_ContentMarks>> m_ContentMarksStack;
   std::vector<std::unique_ptr<CPDF_TextObject>> m_ClipTextList;
   UnownedPtr<CPDF_TextObject> m_pLastTextObject;
-  float m_DefFontSize;
   std::vector<FX_PATHPOINT> m_PathPoints;
   float m_PathStartX;
   float m_PathStartY;