4 files changed, 5 insertions, 3 deletions
diff --git a/fpdfsdk/fpdfxfa/cpdfxfa_context.cpp b/fpdfsdk/fpdfxfa/cpdfxfa_context.cpp
index b239d70695..7945786070 100644
--- a/fpdfsdk/fpdfxfa/cpdfxfa_context.cpp
+++ b/fpdfsdk/fpdfxfa/cpdfxfa_context.cpp
@@ -6,6 +6,8 @@
 
 #include "fpdfsdk/fpdfxfa/cpdfxfa_context.h"
 
+#include <utility>
+
 #include "core/fpdfapi/parser/cpdf_document.h"
 #include "fpdfsdk/cpdfsdk_formfillenvironment.h"
 #include "fpdfsdk/cpdfsdk_interform.h"
diff --git a/fpdfsdk/fpdfxfa/cpdfxfa_context.h b/fpdfsdk/fpdfxfa/cpdfxfa_context.h
index 98161e2b3e..2cd2b439d3 100644
--- a/fpdfsdk/fpdfxfa/cpdfxfa_context.h
+++ b/fpdfsdk/fpdfxfa/cpdfxfa_context.h
@@ -29,7 +29,7 @@ enum LoadStatus {
 
 class CPDFXFA_Context : public IXFA_AppProvider {
  public:
-  CPDFXFA_Context(std::unique_ptr<CPDF_Document> pPDFDoc);
+  explicit CPDFXFA_Context(std::unique_ptr<CPDF_Document> pPDFDoc);
   ~CPDFXFA_Context() override;
 
   bool LoadXFADoc();
diff --git a/fpdfsdk/fpdfxfa/cpdfxfa_docenvironment.h b/fpdfsdk/fpdfxfa/cpdfxfa_docenvironment.h
index 8909cf6429..a7d41a88c8 100644
--- a/fpdfsdk/fpdfxfa/cpdfxfa_docenvironment.h
+++ b/fpdfsdk/fpdfxfa/cpdfxfa_docenvironment.h
@@ -15,7 +15,7 @@ class IJS_Context;
 
 class CPDFXFA_DocEnvironment : public IXFA_DocEnvironment {
  public:
-  CPDFXFA_DocEnvironment(CPDFXFA_Context*);
+  explicit CPDFXFA_DocEnvironment(CPDFXFA_Context*);
   ~CPDFXFA_DocEnvironment() override;
 
   // IXFA_DocEnvironment
diff --git a/fpdfsdk/fpdfxfa/cxfa_fwladaptertimermgr.h b/fpdfsdk/fpdfxfa/cxfa_fwladaptertimermgr.h
index 5b0b414214..9f529fcbc8 100644
--- a/fpdfsdk/fpdfxfa/cxfa_fwladaptertimermgr.h
+++ b/fpdfsdk/fpdfxfa/cxfa_fwladaptertimermgr.h
@@ -17,7 +17,7 @@ struct CFWL_TimerInfo;
 
 class CXFA_FWLAdapterTimerMgr : public IFWL_AdapterTimerMgr {
  public:
-  CXFA_FWLAdapterTimerMgr(CPDFSDK_FormFillEnvironment* pFormFillEnv)
+  explicit CXFA_FWLAdapterTimerMgr(CPDFSDK_FormFillEnvironment* pFormFillEnv)
       : m_pFormFillEnv(pFormFillEnv) {}
 
   void Start(IFWL_Timer* pTimer,