diff --git a/Userland/Libraries/LibWeb/CSS/CSSKeyframesRule.h b/Userland/Libraries/LibWeb/CSS/CSSKeyframesRule.h
index 741287c128..7e7b407a59 100644
--- a/Userland/Libraries/LibWeb/CSS/CSSKeyframesRule.h
+++ b/Userland/Libraries/LibWeb/CSS/CSSKeyframesRule.h
@@ -31,10 +31,7 @@ public:
     FlyString const& name() const { return m_name; }
     size_t length() { return m_keyframes.size(); }
 
-    void set_name(DeprecatedString const& name)
-    {
-        m_name = FlyString::from_utf8(name.view()).release_value_but_fixme_should_propagate_errors();
-    }
+    void set_name(String const& name) { m_name = name; }
 
 private:
     CSSKeyframesRule(JS::Realm& realm, FlyString name, Vector<JS::NonnullGCPtr<CSSKeyframeRule>> keyframes)
diff --git a/Userland/Libraries/LibWeb/CSS/CSSKeyframesRule.idl b/Userland/Libraries/LibWeb/CSS/CSSKeyframesRule.idl
index 2f8d3d353e..e9d9634d33 100644
--- a/Userland/Libraries/LibWeb/CSS/CSSKeyframesRule.idl
+++ b/Userland/Libraries/LibWeb/CSS/CSSKeyframesRule.idl
@@ -1,6 +1,6 @@
 #import <CSS/CSSRule.idl>
 
-[Exposed=Window]
+[Exposed=Window, UseNewAKString]
 interface CSSKeyframesRule : CSSRule {
     attribute CSSOMString name;
     readonly attribute unsigned long length;