diff --git a/src/plugins/coreplugin/find/highlightscrollbarcontroller.cpp b/src/plugins/coreplugin/find/highlightscrollbarcontroller.cpp
index 75736bb6810..222631ad140 100644
--- a/src/plugins/coreplugin/find/highlightscrollbarcontroller.cpp
+++ b/src/plugins/coreplugin/find/highlightscrollbarcontroller.cpp
@@ -360,7 +360,7 @@ void HighlightScrollBarController::setScrollArea(QAbstractScrollArea *scrollArea
 
 double HighlightScrollBarController::lineHeight() const
 {
-    return m_lineHeight;
+    return ceil(m_lineHeight);
 }
 
 void HighlightScrollBarController::setLineHeight(double lineHeight)