diff --git a/NEWS.md b/NEWS.md
index 24e452e1..5ed6addd 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -138,7 +138,6 @@ Red Panda C++ Version 2.27
   - enhancement: Auto hide Project menu if no project openning.
   - fix: Toggle breakpoint by shortcut may use wrong line.
   - fix: Size of the icons in problem and problem set panel are not correct.
-  - change: Turn off font hinting.
     
 Red Panda C++ Version 2.26
   - enhancement: Code suggestion for embedded std::vectors.
diff --git a/RedPandaIDE/editor.cpp b/RedPandaIDE/editor.cpp
index fe77d53c..ab73f887 100644
--- a/RedPandaIDE/editor.cpp
+++ b/RedPandaIDE/editor.cpp
@@ -5346,7 +5346,6 @@ void Editor::applySettings()
     f.setFamilies(pSettings->editor().fontFamiliesWithControlFont());
     f.setPixelSize(pointToPixel(pSettings->editor().fontSize()));
     f.setStyleStrategy(QFont::PreferAntialias);
-    f.setHintingPreference(QFont::PreferNoHinting);
     setFont(f);
 
     // QFont f=QFont(pSettings->editor().fontName());
@@ -5372,7 +5371,6 @@ void Editor::applySettings()
         f.setPixelSize(pointToPixel(pSettings->editor().fontSize()));
     }
     f.setStyleStrategy(QFont::PreferAntialias);
-    f.setHintingPreference(QFont::PreferNoHinting);
     gutter().setFont(f);
     gutter().setDigitCount(pSettings->editor().gutterDigitsCount());
     gutter().setVisible(pSettings->editor().gutterVisible());
diff --git a/RedPandaIDE/mainwindow.cpp b/RedPandaIDE/mainwindow.cpp
index 98435af9..ea15177f 100644
--- a/RedPandaIDE/mainwindow.cpp
+++ b/RedPandaIDE/mainwindow.cpp
@@ -1031,7 +1031,6 @@ void MainWindow::applySettings()
     QFont font(pSettings->environment().interfaceFont());
     font.setPixelSize(pointToPixel(pSettings->environment().interfaceFontSize()));
     font.setStyleStrategy(QFont::PreferAntialias);
-    font.setHintingPreference(QFont::PreferNoHinting);
     qApp->setFont(font);
     this->setFont(font);
     for (QWidget* p:findChildren<QWidget*>()) {
@@ -1053,7 +1052,6 @@ void MainWindow::applySettings()
     QFont caseEditorFont(pSettings->executor().caseEditorFontName());
     caseEditorFont.setPixelSize(pointToPixel(pSettings->executor().caseEditorFontSize()));
     font.setStyleStrategy(QFont::PreferAntialias);
-    font.setHintingPreference(QFont::PreferNoHinting);
     ui->txtProblemCaseInput->setFont(caseEditorFont);
     ui->lblProblemCaseInput->setFont(caseEditorFont);
     ui->txtProblemCaseOutput->setFont(caseEditorFont);
diff --git a/RedPandaIDE/widgets/cpudialog.cpp b/RedPandaIDE/widgets/cpudialog.cpp
index c583560b..42ada22c 100644
--- a/RedPandaIDE/widgets/cpudialog.cpp
+++ b/RedPandaIDE/widgets/cpudialog.cpp
@@ -104,7 +104,6 @@ void CPUDialog::updateDPI(float dpi)
     QFont font(pSettings->environment().interfaceFont());
     font.setPixelSize(pointToPixel(pSettings->environment().interfaceFontSize(),dpi));
     font.setStyleStrategy(QFont::PreferAntialias);
-    font.setHintingPreference(QFont::PreferNoHinting);
     setFont(font);
     for (QWidget* p:findChildren<QWidget*>()) {
         if (p!=ui->txtCode)
@@ -152,7 +151,6 @@ void CPUDialog::resetEditorFont(float dpi)
     f.setFamilies(pSettings->editor().fontFamiliesWithControlFont());
     f.setPixelSize(pointToPixel(pSettings->editor().fontSize(),dpi));
     f.setStyleStrategy(QFont::PreferAntialias);
-    f.setHintingPreference(QFont::PreferNoHinting);
     ui->txtCode->setFont(f);
 }
 
diff --git a/libs/qsynedit/qsynedit/qsynedit.cpp b/libs/qsynedit/qsynedit/qsynedit.cpp
index d3363133..b1cda448 100644
--- a/libs/qsynedit/qsynedit/qsynedit.cpp
+++ b/libs/qsynedit/qsynedit/qsynedit.cpp
@@ -61,7 +61,6 @@ QSynEdit::QSynEdit(QWidget *parent) : QAbstractScrollArea(parent),
     mPaintLock = 0;
     mFontDummy = QFont("monospace",14);
     mFontDummy.setStyleStrategy(QFont::PreferAntialias);
-    mFontDummy.setHintingPreference(QFont::PreferNoHinting);
     mDocument = std::make_shared<Document>(mFontDummy, this);
 
     mMouseMoved = false;