diff --git a/AK/StringBuilder.h b/AK/StringBuilder.h
index 21b684e170..7342426be5 100644
--- a/AK/StringBuilder.h
+++ b/AK/StringBuilder.h
@@ -63,9 +63,10 @@ public:
 
 #ifndef KERNEL
     [[nodiscard]] DeprecatedString to_deprecated_string() const;
-    ErrorOr<String> to_string() const;
 #endif
 
+    ErrorOr<String> to_string() const;
+
     [[nodiscard]] ByteBuffer to_byte_buffer() const;
 
     [[nodiscard]] StringView string_view() const;