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-rw-r--r--Libraries/LibWeb/TreeNode.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/Libraries/LibWeb/TreeNode.h b/Libraries/LibWeb/TreeNode.h
index 3cd4742137..96e8155b61 100644
--- a/Libraries/LibWeb/TreeNode.h
+++ b/Libraries/LibWeb/TreeNode.h
@@ -380,6 +380,8 @@ inline void TreeNode<T>::insert_before(NonnullRefPtr<T> node, RefPtr<T> child, b
node->m_previous_sibling = child->m_previous_sibling;
node->m_next_sibling = child;
+ child->m_previous_sibling = node;
+
if (m_first_child == child)
m_first_child = node;