diff --git a/src/mstl_params.rs b/src/mstl_params.rs
index 69c69bf..087e4bb 100644
--- a/src/mstl_params.rs
+++ b/src/mstl_params.rs
@@ -1,6 +1,7 @@
 use super::mstl_impl::mstl;
 use super::{Error, MstlResult, StlParams};
 
+#[derive(Clone, Debug)]
 pub struct MstlParams {
     iterate: usize,
     lambda: Option<f32>,