diff --git a/plugins/UM3NetworkPrinting/resources/qml/MonitorPrintJobProgressBar.qml b/plugins/UM3NetworkPrinting/resources/qml/MonitorPrintJobProgressBar.qml
index 44f0a30c30..91f4accee1 100644
--- a/plugins/UM3NetworkPrinting/resources/qml/MonitorPrintJobProgressBar.qml
+++ b/plugins/UM3NetworkPrinting/resources/qml/MonitorPrintJobProgressBar.qml
@@ -20,7 +20,7 @@ Item
     property var printJob: null
 
     width: childrenRect.width
-    height: 18 * screenScaleFactor // TODO: Theme!
+    height: UM.Theme.getSize("monitor_text_line").height
 
     UM.ProgressBar
     {
@@ -40,7 +40,7 @@ Item
         anchors
         {
             left: progressBar.right
-            leftMargin: 18 * screenScaleFactor // TODO: Theme!
+            leftMargin: UM.Theme.getSize("monitor_margin").width
             verticalCenter: parent.verticalCenter
         }
         text: printJob ? Math.round(printJob.progress * 100) + "%" : "0%"
@@ -49,7 +49,7 @@ Item
         font: UM.Theme.getFont("default") // 12pt, regular
 
         // FIXED-LINE-HEIGHT:
-        height: 18 * screenScaleFactor // TODO: Theme!
+        height: UM.Theme.getSize("monitor_text_line").height
         verticalAlignment: Text.AlignVCenter
         renderType: Text.NativeRendering
     }
@@ -59,7 +59,7 @@ Item
         anchors
         {
             left: percentLabel.right
-            leftMargin: 18 * screenScaleFactor // TODO: Theme!
+            leftMargin: UM.Theme.getSize("monitor_margin").width
             verticalCenter: parent.verticalCenter
         }
         color: UM.Theme.getColor("monitor_text_primary")
@@ -103,7 +103,7 @@ Item
         width: contentWidth
 
         // FIXED-LINE-HEIGHT:
-        height: 18 * screenScaleFactor // TODO: Theme!
+        height: UM.Theme.getSize("monitor_text_line").height
         verticalAlignment: Text.AlignVCenter
         renderType: Text.NativeRendering
     }