diff --git a/src/app/qgsmapcanvasdockwidget.cpp b/src/app/qgsmapcanvasdockwidget.cpp
index c8f5f75718853..752befc06cd75 100644
--- a/src/app/qgsmapcanvasdockwidget.cpp
+++ b/src/app/qgsmapcanvasdockwidget.cpp
@@ -30,6 +30,7 @@
 #include "qgsvectorlayer.h"
 #include "qgsapplication.h"
 #include "qgsdockablewidgethelper.h"
+#include "qgsprojectviewsettings.h"
 
 #include <QMessageBox>
 #include <QMenu>
@@ -590,6 +591,22 @@ QgsMapSettingsAction::QgsMapSettingsAction( QWidget *parent )
   gLayout->addWidget( label, 2, 0 );
 
   mScaleCombo = new QgsScaleComboBox();
+  // use either global scales or project scales
+  if ( QgsProject::instance()->viewSettings()->useProjectScales() )
+  {
+    const QVector< double > scales = QgsProject::instance()->viewSettings()->mapScales();
+    QStringList textScales;
+    textScales.reserve( scales.size() );
+    for ( const double scale : scales )
+      textScales << QStringLiteral( "1:%1" ).arg( QLocale().toString( scale, 'f', 0 ) );
+    mScaleCombo->updateScales( textScales );
+  }
+  else
+  {
+    // use global scales
+    mScaleCombo->updateScales();
+  }
+
   gLayout->addWidget( mScaleCombo, 2, 1 );
 
   mRotationWidget = new QgsDoubleSpinBox();
diff --git a/src/gui/qgstextformatwidget.cpp b/src/gui/qgstextformatwidget.cpp
index b9f99bcf0599c..cbc98d3168a18 100644
--- a/src/gui/qgstextformatwidget.cpp
+++ b/src/gui/qgstextformatwidget.cpp
@@ -43,6 +43,7 @@
 #include "qgssymbollayerreference.h"
 #include "qgsconfig.h"
 #include "qgsprojectstylesettings.h"
+#include "qgsprojectviewsettings.h"
 
 #include <QButtonGroup>
 #include <QMessageBox>
@@ -849,6 +850,24 @@ void QgsTextFormatWidget::populateDataDefinedButtons()
   registerDataDefinedButton( mScaleBasedVisibilityMaxDDBtn, QgsPalLayerSettings::Property::MaximumScale );
   mScaleBasedVisibilityMaxDDBtn->setUsageInfo( ddScaleVisInfo );
 
+  // use either global scales or project scales
+  if ( QgsProject::instance()->viewSettings()->useProjectScales() )
+  {
+    const QVector< double > scales = QgsProject::instance()->viewSettings()->mapScales();
+    QStringList textScales;
+    textScales.reserve( scales.size() );
+    for ( const double scale : scales )
+      textScales << QStringLiteral( "1:%1" ).arg( QLocale().toString( scale, 'f', 0 ) );
+    mMinScaleWidget->updateScales( textScales );
+    mMaxScaleWidget->updateScales( textScales );
+  }
+  else
+  {
+    // use global scales
+    mMinScaleWidget->updateScales();
+    mMaxScaleWidget->updateScales();
+  }
+
   registerDataDefinedButton( mFontLimitPixelDDBtn, QgsPalLayerSettings::Property::FontLimitPixel );
   mFontLimitPixelDDBtn->registerCheckedWidget( mFontLimitPixelChkBox );
   registerDataDefinedButton( mFontMinPixelDDBtn, QgsPalLayerSettings::Property::FontMinPixel );