diff --git a/fpdfsdk/cpdfsdk_formfillenvironment.cpp b/fpdfsdk/cpdfsdk_formfillenvironment.cpp
index d93e309..f729f71 100644
--- a/fpdfsdk/cpdfsdk_formfillenvironment.cpp
+++ b/fpdfsdk/cpdfsdk_formfillenvironment.cpp
@@ -766,5 +766,5 @@
 }
 
 FX_BOOL CPDFSDK_FormFillEnvironment::GetPermissions(int nFlag) {
-  return GetPDFDocument()->GetUserPermissions() & nFlag;
+  return !!(GetPDFDocument()->GetUserPermissions() & nFlag);
 }
diff --git a/fpdfsdk/fpdf_dataavail.cpp b/fpdfsdk/fpdf_dataavail.cpp
index 45d3b2a..481dd3b 100644
--- a/fpdfsdk/fpdf_dataavail.cpp
+++ b/fpdfsdk/fpdf_dataavail.cpp
@@ -50,7 +50,7 @@
 
   // CPDF_DataAvail::FileAvail:
   FX_BOOL IsDataAvail(FX_FILESIZE offset, uint32_t size) override {
-    return m_pfileAvail->IsDataAvail(m_pfileAvail, offset, size);
+    return !!m_pfileAvail->IsDataAvail(m_pfileAvail, offset, size);
   }
 
  private:
@@ -117,7 +117,7 @@
   pAvail->m_FileAvail.Set(file_avail);
   pAvail->m_FileRead.Set(file);
   pAvail->m_pDataAvail = pdfium::MakeUnique<CPDF_DataAvail>(
-      &pAvail->m_FileAvail, &pAvail->m_FileRead, TRUE);
+      &pAvail->m_FileAvail, &pAvail->m_FileRead, true);
   return pAvail;
 }
 
diff --git a/fpdfsdk/fpdf_sysfontinfo.cpp b/fpdfsdk/fpdf_sysfontinfo.cpp
index 5f80ca0..bfd45e8 100644
--- a/fpdfsdk/fpdf_sysfontinfo.cpp
+++ b/fpdfsdk/fpdf_sysfontinfo.cpp
@@ -129,8 +129,8 @@
                             const char* family,
                             int* bExact) {
   auto* pDefault = static_cast<FPDF_SYSFONTINFO_DEFAULT*>(pThis);
-  return pDefault->m_pFontInfo->MapFont(weight, bItalic, charset, pitch_family,
-                                        family, *bExact);
+  return pDefault->m_pFontInfo->MapFont(weight, !!bItalic, charset,
+                                        pitch_family, family, *bExact);
 }
 
 void* DefaultGetFont(struct _FPDF_SYSFONTINFO* pThis, const char* family) {
diff --git a/xfa/fde/cfde_txtedtengine.cpp b/xfa/fde/cfde_txtedtengine.cpp
index 32df561..60ad609 100644
--- a/xfa/fde/cfde_txtedtengine.cpp
+++ b/xfa/fde/cfde_txtedtengine.cpp
@@ -1339,7 +1339,7 @@
     ptCaret.x = m_rtCaret.left + m_rtCaret.width / 2 - m_Param.fLineSpace;
     ptCaret.y = m_fCaretPosReserve;
     FX_BOOL bLineReserve =
-        m_Param.dwLayoutStyles & FDE_TEXTEDITLAYOUT_LineReserve;
+        !!(m_Param.dwLayoutStyles & FDE_TEXTEDITLAYOUT_LineReserve);
     if (ptCaret.x < rtContent.left) {
       if (bLineReserve) {
         if (m_nCaretPage == CountPages() - 1) {
@@ -1383,7 +1383,7 @@
     ptCaret.y = m_fCaretPosReserve;
     if (ptCaret.x >= rtContent.right()) {
       FX_BOOL bLineReserve =
-          m_Param.dwLayoutStyles & FDE_TEXTEDITLAYOUT_LineReserve;
+          !!(m_Param.dwLayoutStyles & FDE_TEXTEDITLAYOUT_LineReserve);
       if (bLineReserve) {
         if (m_nCaretPage == 0) {
           return FALSE;
@@ -1566,7 +1566,7 @@
                                      FX_BOOL bBefore) {
   IFDE_TxtEdtPage* pPage = m_PagePtrArray[m_nCaretPage];
   m_Param.pEventSink->On_PageLoad(this, m_nCaretPage, 0);
-  FX_BOOL bCombText = m_Param.dwLayoutStyles & FDE_TEXTEDITLAYOUT_CombText;
+  FX_BOOL bCombText = !!(m_Param.dwLayoutStyles & FDE_TEXTEDITLAYOUT_CombText);
   int32_t nIndexInpage = nCaret - pPage->GetCharStart();
   if (bBefore && bCombText && nIndexInpage > 0) {
     nIndexInpage--;
diff --git a/xfa/fde/cfde_txtedtpage.cpp b/xfa/fde/cfde_txtedtpage.cpp
index 24eab86..9f0d29f 100644
--- a/xfa/fde/cfde_txtedtpage.cpp
+++ b/xfa/fde/cfde_txtedtpage.cpp
@@ -295,7 +295,7 @@
   nPageEnd += (nTemp - 1);
   FX_BOOL bVertial = pParams->dwLayoutStyles & FDE_TEXTEDITLAYOUT_DocVertical;
   FX_BOOL bLineReserve =
-      pParams->dwLayoutStyles & FDE_TEXTEDITLAYOUT_LineReserve;
+      !!(pParams->dwLayoutStyles & FDE_TEXTEDITLAYOUT_LineReserve);
   FX_FLOAT fLineStart =
       bVertial
           ? (bLineReserve ? (pParams->fPlateWidth - pParams->fLineSpace) : 0.0f)
diff --git a/xfa/fde/css/fde_cssdeclaration.h b/xfa/fde/css/fde_cssdeclaration.h
index d33e710..3598429 100644
--- a/xfa/fde/css/fde_cssdeclaration.h
+++ b/xfa/fde/css/fde_cssdeclaration.h
@@ -14,7 +14,7 @@
 class FDE_CSSPropertyHolder : public CFX_Target {
  public:
   int16_t eProperty;
-  int16_t bImportant;
+  FX_BOOL bImportant;
   IFDE_CSSValue* pValue;
   FDE_CSSPropertyHolder* pNext;
 };