diff --git a/datafusion/core/src/physical_optimizer/enforce_distribution.rs b/datafusion/core/src/physical_optimizer/enforce_distribution.rs
index c5609ae22fc0..c44200a492eb 100644
--- a/datafusion/core/src/physical_optimizer/enforce_distribution.rs
+++ b/datafusion/core/src/physical_optimizer/enforce_distribution.rs
@@ -1208,7 +1208,7 @@ fn ensure_distribution(
     // We store the updated children in `new_children`.
     let children = izip!(
         children.into_iter(),
-        plan.required_input_ordering().into_iter(),
+        plan.required_input_ordering(),
         plan.maintains_input_order(),
         repartition_status_flags.into_iter()
     )
diff --git a/datafusion/core/src/physical_optimizer/sanity_checker.rs b/datafusion/core/src/physical_optimizer/sanity_checker.rs
index 0bb650b3f80b..f4b0f7c6069b 100644
--- a/datafusion/core/src/physical_optimizer/sanity_checker.rs
+++ b/datafusion/core/src/physical_optimizer/sanity_checker.rs
@@ -132,8 +132,8 @@ pub fn check_plan_sanity(
 
     for ((idx, child), sort_req, dist_req) in izip!(
         plan.children().into_iter().enumerate(),
-        plan.required_input_ordering().into_iter(),
-        plan.required_input_distribution().into_iter()
+        plan.required_input_ordering(),
+        plan.required_input_distribution(),
     ) {
         let child_eq_props = child.equivalence_properties();
         if let Some(sort_req) = sort_req {