diff --git a/Userland/Libraries/LibWeb/DOM/CharacterData.cpp b/Userland/Libraries/LibWeb/DOM/CharacterData.cpp
index 60fb60ef7f..6a60493537 100644
--- a/Userland/Libraries/LibWeb/DOM/CharacterData.cpp
+++ b/Userland/Libraries/LibWeb/DOM/CharacterData.cpp
@@ -25,6 +25,7 @@
  */
 
 #include <LibWeb/DOM/CharacterData.h>
+#include <LibWeb/DOM/Document.h>
 
 namespace Web::DOM {
 
@@ -38,4 +39,13 @@ CharacterData::~CharacterData()
 {
 }
 
+void CharacterData::set_data(String data)
+{
+    if (m_data == data)
+        return;
+    m_data = move(data);
+    // FIXME: This is definitely too aggressive.
+    document().schedule_forced_layout();
+}
+
 }
diff --git a/Userland/Libraries/LibWeb/DOM/CharacterData.h b/Userland/Libraries/LibWeb/DOM/CharacterData.h
index de09340e41..a061d6705a 100644
--- a/Userland/Libraries/LibWeb/DOM/CharacterData.h
+++ b/Userland/Libraries/LibWeb/DOM/CharacterData.h
@@ -41,7 +41,7 @@ public:
     virtual ~CharacterData() override;
 
     const String& data() const { return m_data; }
-    void set_data(const String& data) { m_data = data; }
+    void set_data(String);
 
     unsigned length() const { return m_data.length(); }