diff --git a/AK/String.cpp b/AK/String.cpp
index dae488464cb..f20a4ae61e2 100644
--- a/AK/String.cpp
+++ b/AK/String.cpp
@@ -515,7 +515,7 @@ InputStream& operator>>(InputStream& stream, String& string)
     }
 }
 
-String String::vformatted(StringView fmtstr, TypeErasedFormatParams params)
+String String::vformatted(StringView fmtstr, TypeErasedFormatParams& params)
 {
     StringBuilder builder;
     vformat(builder, fmtstr, params);
diff --git a/AK/String.h b/AK/String.h
index 9bc3e5e2d14..f0437296242 100644
--- a/AK/String.h
+++ b/AK/String.h
@@ -265,12 +265,13 @@ public:
         return String((const char*)buffer.data(), buffer.size(), should_chomp);
     }
 
-    [[nodiscard]] static String vformatted(StringView fmtstr, TypeErasedFormatParams);
+    [[nodiscard]] static String vformatted(StringView fmtstr, TypeErasedFormatParams&);
 
     template<typename... Parameters>
     [[nodiscard]] static String formatted(CheckedFormatString<Parameters...>&& fmtstr, const Parameters&... parameters)
     {
-        return vformatted(fmtstr.view(), VariadicFormatParams { parameters... });
+        VariadicFormatParams variadic_format_parameters { parameters... };
+        return vformatted(fmtstr.view(), variadic_format_parameters);
     }
 
     template<typename T>