diff --git a/Userland/Libraries/LibWeb/DOM/Element.cpp b/Userland/Libraries/LibWeb/DOM/Element.cpp
index 164ef4c4dd..a8f2a4b4c4 100644
--- a/Userland/Libraries/LibWeb/DOM/Element.cpp
+++ b/Userland/Libraries/LibWeb/DOM/Element.cpp
@@ -310,7 +310,7 @@ bool Element::has_attribute(StringView name) const
 }
 
 // https://dom.spec.whatwg.org/#dom-element-hasattributens
-bool Element::has_attribute_ns(DeprecatedFlyString namespace_, DeprecatedFlyString const& name) const
+bool Element::has_attribute_ns(StringView namespace_, StringView name) const
 {
     // 1. If namespace is the empty string, then set it to null.
     if (namespace_.is_empty())
diff --git a/Userland/Libraries/LibWeb/DOM/Element.h b/Userland/Libraries/LibWeb/DOM/Element.h
index 3abe140779..d703c6b405 100644
--- a/Userland/Libraries/LibWeb/DOM/Element.h
+++ b/Userland/Libraries/LibWeb/DOM/Element.h
@@ -93,7 +93,7 @@ public:
 
     // FIXME: This should be taking a 'FlyString const&'
     bool has_attribute(StringView name) const;
-    bool has_attribute_ns(DeprecatedFlyString namespace_, DeprecatedFlyString const& name) const;
+    bool has_attribute_ns(StringView namespace_, StringView name) const;
     bool has_attributes() const;
 
     // FIXME: This should be taking a 'FlyString const&'