diff --git a/dom/base/DOMIntersectionObserver.cpp b/dom/base/DOMIntersectionObserver.cpp
index 0834bc05c9..f0be34ec0b 100644
--- a/dom/base/DOMIntersectionObserver.cpp
+++ b/dom/base/DOMIntersectionObserver.cpp
@@ -344,7 +344,7 @@ DOMIntersectionObserver::Update(nsIDocument* aDocument, DOMHighResTimeStamp time
         nsLayoutUtils::GetContainingBlockForClientRect(targetFrame),
         nsLayoutUtils::RECTS_ACCOUNT_FOR_TRANSFORMS
       );
-      intersectionRect = Some(targetFrame->GetVisualOverflowRect());
+      intersectionRect = Some(targetFrame->GetRectRelativeToSelf());
 
       nsIFrame* containerFrame = nsLayoutUtils::GetCrossDocParentFrame(targetFrame);
       while (containerFrame && containerFrame != rootFrame) {