diff --git a/shell/lock/LockSurface.qml b/shell/lock/LockSurface.qml
index 1782aab..56e35b5 100644
--- a/shell/lock/LockSurface.qml
+++ b/shell/lock/LockSurface.qml
@@ -83,14 +83,14 @@ WlSessionLockSurface {
         }
     }
 
-    // Clock - rotated, left-aligned
+    // Clock - rotated, left-aligned, scaled to screen height
     Item {
         id: _clockItem
         anchors.left: parent.left
         anchors.leftMargin: 48
-        anchors.verticalCenter: parent.verticalCenter
+        anchors.top: parent.top
+        anchors.bottom: parent.bottom
         width: _clockText.height
-        height: _clockCol.implicitWidth
 
         opacity: 0
         property real _slideX: -80
@@ -118,12 +118,11 @@ WlSessionLockSurface {
             spacing: 8
             rotation: -90
             transformOrigin: Item.Center
-
             Text {
                 id: _clockText
                 text: Qt.formatTime(new Date(), "HH:mm")
                 color: S.Theme.base05
-                font.pixelSize: 72
+                font.pixelSize: Math.max(48, root.height * 0.18)
                 font.family: S.Theme.fontFamily
                 font.bold: true