diff --git a/modules/src/ics07_tendermint/header.rs b/modules/src/ics07_tendermint/header.rs
index 92c74889c8..5c0a21b0cb 100644
--- a/modules/src/ics07_tendermint/header.rs
+++ b/modules/src/ics07_tendermint/header.rs
@@ -176,7 +176,7 @@ pub mod test_util {
             281_815_u64.try_into().unwrap(),
         );
 
-        let vs = ValidatorSet::new(vec![v1], Some(v1));
+        let vs = ValidatorSet::new(vec![v1.clone()], Some(v1));
 
         Header {
             signed_header: shdr,