diff --git a/rust/cubesql/cubesql/src/compile/rewrite/cost.rs b/rust/cubesql/cubesql/src/compile/rewrite/cost.rs
index c5069560e6b7a..383a01a357622 100644
--- a/rust/cubesql/cubesql/src/compile/rewrite/cost.rs
+++ b/rust/cubesql/cubesql/src/compile/rewrite/cost.rs
@@ -495,6 +495,7 @@ impl CostFunction<LogicalPlanLanguage> for BestCubePlan {
             LogicalPlanLanguage::Union(_) => 1,
             LogicalPlanLanguage::Window(_) => 1,
             LogicalPlanLanguage::Subquery(_) => 1,
+            LogicalPlanLanguage::Distinct(_) => 1,
             _ => 0,
         };