diff --git a/Userland/Libraries/LibWeb/CSS/Parser/Function.cpp b/Userland/Libraries/LibWeb/CSS/Parser/Function.cpp
index 5218d7b02a..f1d872ebba 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/Function.cpp
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Function.cpp
@@ -10,12 +10,12 @@
 
 namespace Web::CSS::Parser {
 
-Function::Function(String name)
+Function::Function(FlyString name)
     : m_name(move(name))
 {
 }
 
-Function::Function(String name, Vector<ComponentValue>&& values)
+Function::Function(FlyString name, Vector<ComponentValue>&& values)
     : m_name(move(name))
     , m_values(move(values))
 {
diff --git a/Userland/Libraries/LibWeb/CSS/Parser/Function.h b/Userland/Libraries/LibWeb/CSS/Parser/Function.h
index 4ce7ed871f..5979c461f7 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/Function.h
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Function.h
@@ -7,6 +7,7 @@
 
 #pragma once
 
+#include <AK/FlyString.h>
 #include <AK/RefCounted.h>
 #include <AK/String.h>
 #include <AK/Vector.h>
@@ -19,17 +20,17 @@ class Function : public RefCounted<Function> {
     friend class Parser;
 
 public:
-    explicit Function(String name);
-    Function(String name, Vector<ComponentValue>&& values);
+    explicit Function(FlyString name);
+    Function(FlyString name, Vector<ComponentValue>&& values);
     ~Function();
 
-    String const& name() const { return m_name; }
+    StringView name() const { return m_name; }
     Vector<ComponentValue> const& values() const { return m_values; }
 
     String to_string() const;
 
 private:
-    String m_name;
+    FlyString m_name;
     Vector<ComponentValue> m_values;
 };
 }