diff --git a/engine/src/conversion/codegen_rs/mod.rs b/engine/src/conversion/codegen_rs/mod.rs
index dc169ee3d..234ffd60d 100644
--- a/engine/src/conversion/codegen_rs/mod.rs
+++ b/engine/src/conversion/codegen_rs/mod.rs
@@ -358,7 +358,7 @@ impl<'a> RsCodeGenerator<'a> {
             let mut new_mod: ItemMod = parse_quote!(
                 pub mod #child_id {
                     #[allow(unused_imports)]
-                    use super::{cxxbridge, output, bindgen};
+                    use super::{cxxbridge, output, bindgen, ToCppString};
                 }
             );
             Self::append_child_output_namespace(