diff --git a/src/controls/ToolBarApplicationHeader.qml b/src/controls/ToolBarApplicationHeader.qml
--- a/src/controls/ToolBarApplicationHeader.qml
+++ b/src/controls/ToolBarApplicationHeader.qml
@@ -108,7 +108,7 @@
             color: Theme.textColor
             elide: Text.ElideRight
             text: page ? page.title : ""
-            font.pixelSize: parent.height / 1.6
+            font.pointSize: Math.max(1, (parent.height / 1.6) / Units.devicePixelRatio)
         }
         Controls.ToolButton {
             id: moreButton
diff --git a/src/controls/templates/ApplicationHeader.qml b/src/controls/templates/ApplicationHeader.qml
--- a/src/controls/templates/ApplicationHeader.qml
+++ b/src/controls/templates/ApplicationHeader.qml
@@ -92,7 +92,7 @@
                 color: header.background && header.background.color && header.background.color == Theme.highlightColor ? Theme.highlightedTextColor : Theme.textColor
                 elide: Text.ElideRight
                 text: page ? page.title : ""
-                font.pixelSize: titleList.height / 1.6
+                font.pointSize: Math.max(1, titleList.height / (1.6 * Units.devicePixelRatio))
                 verticalAlignment: Text.AlignVCenter
                 Rectangle {
                     anchors {