diff --git a/engine/core/dom/Element.cpp b/engine/core/dom/Element.cpp
index 7cb85c47be1..8cee479481d 100644
--- a/engine/core/dom/Element.cpp
+++ b/engine/core/dom/Element.cpp
@@ -801,6 +801,9 @@ void Element::attach(const AttachContext& context)
 {
     ASSERT(document().inStyleRecalc());
 
+    if (isInsertionPoint())
+        toInsertionPoint(this)->attachDistribution(context);
+
     // We've already been through detach when doing an attach, but we might
     // need to clear any state that's been added since then.
     if (hasRareData() && styleChangeType() == NeedsReattachStyleChange) {
@@ -826,6 +829,9 @@ void Element::attach(const AttachContext& context)
 
 void Element::detach(const AttachContext& context)
 {
+    if (isInsertionPoint())
+        toInsertionPoint(this)->detachDistribution(context);
+
     if (hasRareData()) {
         ElementRareData* data = elementRareData();
 
diff --git a/engine/core/dom/Element.h b/engine/core/dom/Element.h
index 4f5a234c1a1..2771a576bae 100644
--- a/engine/core/dom/Element.h
+++ b/engine/core/dom/Element.h
@@ -196,8 +196,9 @@ public:
 
     bool hasEquivalentAttributes(const Element* other) const;
 
-    virtual void attach(const AttachContext& = AttachContext()) override;
-    virtual void detach(const AttachContext& = AttachContext()) override;
+    void attach(const AttachContext& = AttachContext()) final;
+    void detach(const AttachContext& = AttachContext()) final;
+
     virtual RenderObject* createRenderer(RenderStyle*);
     void recalcStyle(StyleRecalcChange, Text* nextTextSibling = 0);
     void setAnimationStyleChange(bool);
diff --git a/engine/core/dom/shadow/InsertionPoint.cpp b/engine/core/dom/shadow/InsertionPoint.cpp
index 98ec9d2b2a8..1ac84d70647 100644
--- a/engine/core/dom/shadow/InsertionPoint.cpp
+++ b/engine/core/dom/shadow/InsertionPoint.cpp
@@ -92,7 +92,7 @@ void InsertionPoint::setDistribution(ContentDistribution& distribution)
     m_distribution.shrinkToFit();
 }
 
-void InsertionPoint::attach(const AttachContext& context)
+void InsertionPoint::attachDistribution(const AttachContext& context)
 {
     // We need to attach the distribution here so that they're inserted in the right order
     // otherwise the n^2 protection inside RenderTreeBuilder will cause them to be
@@ -102,16 +102,12 @@ void InsertionPoint::attach(const AttachContext& context)
         if (m_distribution.at(i)->needsAttach())
             m_distribution.at(i)->attach(context);
     }
-
-    HTMLElement::attach(context);
 }
 
-void InsertionPoint::detach(const AttachContext& context)
+void InsertionPoint::detachDistribution(const AttachContext& context)
 {
     for (size_t i = 0; i < m_distribution.size(); ++i)
         m_distribution.at(i)->lazyReattachIfAttached();
-
-    HTMLElement::detach(context);
 }
 
 void InsertionPoint::willRecalcStyle(StyleRecalcChange change)
diff --git a/engine/core/dom/shadow/InsertionPoint.h b/engine/core/dom/shadow/InsertionPoint.h
index 82ade6bb884..6b86d710b49 100644
--- a/engine/core/dom/shadow/InsertionPoint.h
+++ b/engine/core/dom/shadow/InsertionPoint.h
@@ -54,8 +54,8 @@ public:
 
     virtual bool canAffectSelector() const { return false; }
 
-    virtual void attach(const AttachContext& = AttachContext()) override;
-    virtual void detach(const AttachContext& = AttachContext()) override;
+    void attachDistribution(const AttachContext&);
+    void detachDistribution(const AttachContext&);
 
     bool shouldUseFallbackElements() const;