diff --git a/src/contour/ui.template/Terminal.qml.in b/src/contour/ui.template/Terminal.qml.in
index f45e3279e1..d7b863f24f 100644
--- a/src/contour/ui.template/Terminal.qml.in
+++ b/src/contour/ui.template/Terminal.qml.in
@@ -187,7 +187,7 @@ ContourTerminal
         let vt = vtWidget.session;
         let totalLineCount = (vt.pageLineCount + vt.historyLineCount);
 
-        vbar.position = (vt.historyLineCount - vt.scrollOffset) / totalLineCount;
+        vbar.position = Math.round((vt.historyLineCount - vt.scrollOffset) / totalLineCount);
     }
 
     function updateSizeWidget() {