diff --git a/Tests/LibWeb/Text/expected/DOM/getElementById-multiple.txt b/Tests/LibWeb/Text/expected/DOM/getElementById-multiple.txt
new file mode 100644
index 00000000000..d5a3531f4ba
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/DOM/getElementById-multiple.txt
@@ -0,0 +1 @@
+   getElementById('foo') => 1
diff --git a/Tests/LibWeb/Text/input/DOM/getElementById-multiple.html b/Tests/LibWeb/Text/input/DOM/getElementById-multiple.html
new file mode 100644
index 00000000000..adcc0b3b9ec
--- /dev/null
+++ b/Tests/LibWeb/Text/input/DOM/getElementById-multiple.html
@@ -0,0 +1,7 @@
+<div id="foo" n="1"></div><div id="foo" n="2"></div>
+<script src="../include.js"></script>
+<script>
+    test(() => {
+        println("getElementById('foo') => " + document.getElementById("foo").getAttribute("n"));
+    });
+</script>
diff --git a/Userland/Libraries/LibWeb/DOM/NonElementParentNode.h b/Userland/Libraries/LibWeb/DOM/NonElementParentNode.h
index 4c834250bf1..e2d09d0510c 100644
--- a/Userland/Libraries/LibWeb/DOM/NonElementParentNode.h
+++ b/Userland/Libraries/LibWeb/DOM/NonElementParentNode.h
@@ -18,10 +18,10 @@ namespace Web::DOM {
 template<typename NodeType>
 class NonElementParentNode {
 public:
-    JS::GCPtr<Element const> get_element_by_id(FlyString const& id) const
+    JS::GCPtr<Element> get_element_by_id(FlyString const& id) const
     {
-        JS::GCPtr<Element const> found_element;
-        static_cast<NodeType const*>(this)->template for_each_in_inclusive_subtree_of_type<Element>([&](auto& element) {
+        JS::GCPtr<Element> found_element;
+        const_cast<NodeType*>(static_cast<NodeType const*>(this))->template for_each_in_inclusive_subtree_of_type<Element>([&](auto& element) {
             if (element.id() == id) {
                 found_element = &element;
                 return TraversalDecision::Break;
@@ -31,19 +31,6 @@ public:
         return found_element;
     }
 
-    JS::GCPtr<Element> get_element_by_id(FlyString const& id)
-    {
-        JS::GCPtr<Element> found_element;
-        static_cast<NodeType*>(this)->template for_each_in_inclusive_subtree_of_type<Element>([&](auto& element) {
-            if (element.id() == id) {
-                found_element = &element;
-                return TraversalDecision::Continue;
-            }
-            return TraversalDecision::Continue;
-        });
-        return found_element;
-    }
-
 protected:
     NonElementParentNode() = default;
 };