diff --git a/layout/generic/nsColumnSetFrame.cpp b/layout/generic/nsColumnSetFrame.cpp
index bce01699b09c..34f6b7005c99 100644
--- a/layout/generic/nsColumnSetFrame.cpp
+++ b/layout/generic/nsColumnSetFrame.cpp
@@ -167,9 +167,7 @@ nsColumnSetFrame::ForEachColumn(const std::function<void(const nsRect& lineRect)
   bool isVertical = wm.IsVertical();
   bool isRTL = !wm.IsBidiLTR();
 
-  // Get our content rect as an absolute coordinate, not relative to
-  // our parent (which is what the X and Y normally is)
-  nsRect contentRect = GetContentRect() - GetRect().TopLeft() + aPt;
+  nsRect contentRect = GetContentRectRelativeToSelf() + aPt;
   nsSize ruleSize = isVertical ? nsSize(contentRect.width, ruleWidth)
                                : nsSize(ruleWidth, contentRect.height);