diff --git a/dm_std_lib/std/core/string.dm b/dm_std_lib/std/core/string.dm
index 6344807..c00552d 100644
--- a/dm_std_lib/std/core/string.dm
+++ b/dm_std_lib/std/core/string.dm
@@ -1,5 +1,8 @@
 ns std::core
 
-pub int String
+pub int String {
+    bytes: Array<Byte>
+}
 
-impl StringImpl(fld bytes: Array<Byte>) : String
+#[internal]
+impl StringImpl(bytes) : String