diff --git a/RedPandaIDE/RedPandaIDE.pro b/RedPandaIDE/RedPandaIDE.pro
index b65902b3..9f4da50b 100644
--- a/RedPandaIDE/RedPandaIDE.pro
+++ b/RedPandaIDE/RedPandaIDE.pro
@@ -79,6 +79,7 @@ SOURCES += \
     utils.cpp \
     widgets/coloredit.cpp \
     widgets/consolewidget.cpp \
+    widgets/filepropertiesdialog.cpp \
     widgets/headercompletionpopup.cpp \
     widgets/issuestable.cpp \
     widgets/qconsole.cpp \
@@ -154,6 +155,7 @@ HEADERS += \
     common.h \
     widgets/coloredit.h \
     widgets/consolewidget.h \
+    widgets/filepropertiesdialog.h \
     widgets/headercompletionpopup.h \
     widgets/issuestable.h \
     widgets/qconsole.h \
@@ -180,6 +182,7 @@ FORMS += \
     settingsdialog/environmentappearencewidget.ui \
     settingsdialog/executorgeneralwidget.ui \
     settingsdialog/settingsdialog.ui \
+    widgets/filepropertiesdialog.ui \
     widgets/searchdialog.ui
 
 TRANSLATIONS += \
diff --git a/RedPandaIDE/compiler/compilermanager.cpp b/RedPandaIDE/compiler/compilermanager.cpp
index fbf4b45e..2f7ef267 100644
--- a/RedPandaIDE/compiler/compilermanager.cpp
+++ b/RedPandaIDE/compiler/compilermanager.cpp
@@ -61,7 +61,7 @@ void CompilerManager::compile(const QString& filename, const QByteArray& encodin
     }
 }
 
-void CompilerManager::checkSyntax(const QString &filename, const QString &content)
+void CompilerManager::checkSyntax(const QString &filename, const QString &content, bool isAscii)
 {
     if (!pSettings->compilerSets().defaultSet()) {
         QMessageBox::critical(pMainWindow,
@@ -76,7 +76,7 @@ void CompilerManager::checkSyntax(const QString &filename, const QString &conten
         }
 
         mSyntaxCheckErrorCount = 0;
-        mBackgroundSyntaxChecker = new StdinCompiler(filename,content,true,true);
+        mBackgroundSyntaxChecker = new StdinCompiler(filename,content,isAscii,true,true);
         connect(mBackgroundSyntaxChecker, &Compiler::compileFinished, this ,&CompilerManager::onSyntaxCheckFinished);
         connect(mBackgroundSyntaxChecker, &Compiler::compileIssue, this, &CompilerManager::onSyntaxCheckIssue);
         connect(mBackgroundSyntaxChecker, &Compiler::compileFinished, pMainWindow, &MainWindow::onCompileFinished);
diff --git a/RedPandaIDE/compiler/compilermanager.h b/RedPandaIDE/compiler/compilermanager.h
index e3ccbee9..e7386f49 100644
--- a/RedPandaIDE/compiler/compilermanager.h
+++ b/RedPandaIDE/compiler/compilermanager.h
@@ -19,7 +19,7 @@ public:
     bool running();
 
     void compile(const QString& filename, const QByteArray& encoding, bool rebuild, bool silent=false,bool onlyCheckSyntax=false);
-    void checkSyntax(const QString&filename, const QString& content);
+    void checkSyntax(const QString&filename, const QString& content, bool isAscii);
     void run(const QString& filename, const QString& arguments, const QString& workDir);
     void stopRun();
     void stopCompile();
diff --git a/RedPandaIDE/compiler/stdincompiler.cpp b/RedPandaIDE/compiler/stdincompiler.cpp
index 13b06022..72c8008b 100644
--- a/RedPandaIDE/compiler/stdincompiler.cpp
+++ b/RedPandaIDE/compiler/stdincompiler.cpp
@@ -2,10 +2,12 @@
 #include "compilermanager.h"
 #include <QFile>
 #include <QFileInfo>
+#include "../platform.h"
 
-StdinCompiler::StdinCompiler(const QString &filename, const QString& content, bool silent, bool onlyCheckSyntax):
+StdinCompiler::StdinCompiler(const QString &filename, const QString& content,bool isAscii, bool silent, bool onlyCheckSyntax):
     Compiler(filename,silent,onlyCheckSyntax),
-    mContent(content)
+    mContent(content),
+    mIsAscii(isAscii)
 {
 
 }
@@ -26,6 +28,8 @@ bool StdinCompiler::prepareForCompile()
     if (fileType == FileType::Other)
         fileType = FileType::CppSource;
     QString strFileType;
+    if (!mIsAscii)
+        mArguments += getCharsetArgument(getDefaultSystemEncoding());
     switch(fileType) {
     case FileType::CSource:
     case FileType::CHeader:
diff --git a/RedPandaIDE/compiler/stdincompiler.h b/RedPandaIDE/compiler/stdincompiler.h
index 5c9bef3b..6e81cd86 100644
--- a/RedPandaIDE/compiler/stdincompiler.h
+++ b/RedPandaIDE/compiler/stdincompiler.h
@@ -8,7 +8,7 @@ class StdinCompiler : public Compiler
     Q_OBJECT
 
 public:
-    explicit StdinCompiler(const QString& filename, const QString& content, bool silent,bool onlyCheckSyntax);
+    explicit StdinCompiler(const QString& filename, const QString& content, bool isAscii, bool silent,bool onlyCheckSyntax);
 
     // Compiler interface
 protected:
@@ -17,6 +17,7 @@ protected:
 
 private:
     QString mContent;
+    bool mIsAscii;
 
     // Compiler interface
 protected:
diff --git a/RedPandaIDE/mainwindow.cpp b/RedPandaIDE/mainwindow.cpp
index 435d3b40..6fef59ee 100644
--- a/RedPandaIDE/mainwindow.cpp
+++ b/RedPandaIDE/mainwindow.cpp
@@ -614,7 +614,8 @@ void MainWindow::checkSyntaxInBack(Editor *e)
     mCheckSyntaxInBack=true;
     e->clearSyntaxIssues();
     ui->tableIssues->clearIssues();
-    mCompilerManager->checkSyntax(e->filename(),e->lines()->text());
+    mCompilerManager->checkSyntax(e->filename(),e->lines()->text(),
+                                  e->fileEncoding() == ENCODING_ASCII);
 //    if not PrepareForCompile(cttStdin,True) then begin
 //      fCheckSyntaxInBack:=False;
 //      Exit;
diff --git a/RedPandaIDE/widgets/filepropertiesdialog.cpp b/RedPandaIDE/widgets/filepropertiesdialog.cpp
new file mode 100644
index 00000000..efa020d9
--- /dev/null
+++ b/RedPandaIDE/widgets/filepropertiesdialog.cpp
@@ -0,0 +1,14 @@
+#include "filepropertiesdialog.h"
+#include "ui_filepropertiesdialog.h"
+
+FilePropertiesDialog::FilePropertiesDialog(QWidget *parent) :
+    QDialog(parent),
+    ui(new Ui::FilePropertiesDialog)
+{
+    ui->setupUi(this);
+}
+
+FilePropertiesDialog::~FilePropertiesDialog()
+{
+    delete ui;
+}
diff --git a/RedPandaIDE/widgets/filepropertiesdialog.h b/RedPandaIDE/widgets/filepropertiesdialog.h
new file mode 100644
index 00000000..ed613c26
--- /dev/null
+++ b/RedPandaIDE/widgets/filepropertiesdialog.h
@@ -0,0 +1,22 @@
+#ifndef FILEPROPERTIESDIALOG_H
+#define FILEPROPERTIESDIALOG_H
+
+#include <QDialog>
+
+namespace Ui {
+class FilePropertiesDialog;
+}
+
+class FilePropertiesDialog : public QDialog
+{
+    Q_OBJECT
+
+public:
+    explicit FilePropertiesDialog(QWidget *parent = nullptr);
+    ~FilePropertiesDialog();
+
+private:
+    Ui::FilePropertiesDialog *ui;
+};
+
+#endif // FILEPROPERTIESDIALOG_H
diff --git a/RedPandaIDE/widgets/filepropertiesdialog.ui b/RedPandaIDE/widgets/filepropertiesdialog.ui
new file mode 100644
index 00000000..1a84f4a8
--- /dev/null
+++ b/RedPandaIDE/widgets/filepropertiesdialog.ui
@@ -0,0 +1,18 @@
+<ui version="4.0">
+ <class>FilePropertiesDialog</class>
+ <widget name="FilePropertiesDialog" class="QDialog">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>400</width>
+    <height>300</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Dialog</string>
+  </property>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>