diff --git a/gluten-core/src/main/scala/org/apache/gluten/extension/columnar/transition/ConventionFunc.scala b/gluten-core/src/main/scala/org/apache/gluten/extension/columnar/transition/ConventionFunc.scala
index 3105713d989d..f7e837b25ddc 100644
--- a/gluten-core/src/main/scala/org/apache/gluten/extension/columnar/transition/ConventionFunc.scala
+++ b/gluten-core/src/main/scala/org/apache/gluten/extension/columnar/transition/ConventionFunc.scala
@@ -51,6 +51,9 @@ object ConventionFunc {
     // Components should override Backend's convention function. Hence, reversed injection order
     // is applied.
     val overrides = Component.sorted().reverse.map(_.convFuncOverride())
+    if (overrides.isEmpty) {
+      return Override.Empty
+    }
     new Override {
       override val rowTypeOf: PartialFunction[SparkPlan, Convention.RowType] = {
         overrides.map(_.rowTypeOf).reduce((l, r) => l.orElse(r))
diff --git a/gluten-substrait/src/main/scala/org/apache/gluten/extension/GlutenPlan.scala b/gluten-substrait/src/main/scala/org/apache/gluten/extension/ValidationResult.scala
similarity index 100%
rename from gluten-substrait/src/main/scala/org/apache/gluten/extension/GlutenPlan.scala
rename to gluten-substrait/src/main/scala/org/apache/gluten/extension/ValidationResult.scala