diff --git a/crates/proof-of-sql/src/sql/proof_plans/union_exec.rs b/crates/proof-of-sql/src/sql/proof_plans/union_exec.rs
index 79be994e8..b516d403d 100644
--- a/crates/proof-of-sql/src/sql/proof_plans/union_exec.rs
+++ b/crates/proof-of-sql/src/sql/proof_plans/union_exec.rs
@@ -121,7 +121,6 @@ impl ProverEvaluate for UnionExec {
         let res = table_union(&inputs, alloc, self.schema.clone()).expect("Failed to union tables");
         builder.request_post_result_challenges(2);
         builder.produce_one_evaluation_length(res.num_rows());
-        builder.update_range_length(res.num_rows());
         res
     }