diff --git a/Engine/source/core/stream/fileStream.h b/Engine/source/core/stream/fileStream.h
index 11c65d886..fe7218b9d 100644
--- a/Engine/source/core/stream/fileStream.h
+++ b/Engine/source/core/stream/fileStream.h
@@ -39,6 +39,7 @@ public:
       BUFFER_INVALID = 0xffffffff   // file offsets must all be less than this
    };
 
+   typedef char Ch;    //!< Character type. Only support char.
 public:
    FileStream();                       // default constructor
    virtual ~FileStream();              // destructor
@@ -60,6 +61,8 @@ public:
    virtual void close();
 
    bool flush();
+   //rjson compatibility
+   bool Flush() { return flush(); }
    FileStream* clone() const;
 
 protected:
diff --git a/Engine/source/persistence/rapidjson/document.h b/Engine/source/persistence/rapidjson/document.h
index d1b90eb0b..5493ea683 100644
--- a/Engine/source/persistence/rapidjson/document.h
+++ b/Engine/source/persistence/rapidjson/document.h
@@ -2391,7 +2391,7 @@ public:
     ParseErrorCode GetParseError() const { return parseResult_.Code(); }
 
     //! Get the position of last parsing error in input, 0 otherwise.
-    size_t GetErrorOffset() const { return parseResult_.Offset(); }
+    size_t GetErrorOffset() const { return parseResult_._Offset(); }
 
     //! Implicit conversion to get the last parse result
 #ifndef __clang // -Wdocumentation
diff --git a/Engine/source/persistence/rapidjson/error/error.h b/Engine/source/persistence/rapidjson/error/error.h
index 095966c5d..597f70be8 100644
--- a/Engine/source/persistence/rapidjson/error/error.h
+++ b/Engine/source/persistence/rapidjson/error/error.h
@@ -106,7 +106,6 @@ enum ParseErrorCode {
 struct ParseResult {
     //!! Unspecified boolean type
     typedef bool (ParseResult::*BooleanType)() const;
-
 private:
    ParseErrorCode code_;
    size_t offset_;
diff --git a/Engine/source/persistence/rapidjson/reader.h b/Engine/source/persistence/rapidjson/reader.h
index 44a6bcd30..2755e1bb8 100644
--- a/Engine/source/persistence/rapidjson/reader.h
+++ b/Engine/source/persistence/rapidjson/reader.h
@@ -683,7 +683,7 @@ public:
     ParseErrorCode GetParseErrorCode() const { return parseResult_.Code(); }
 
     //! Get the position of last parsing error in input, 0 otherwise.
-    size_t GetErrorOffset() const { return parseResult_.Offset(); }
+    size_t GetErrorOffset() const { return parseResult_._Offset(); }
 
 protected:
     void SetParseError(ParseErrorCode code, size_t offset) { parseResult_.Set(code, offset); }