diff --git a/linq4j/src/main/java/org/apache/calcite/linq4j/tree/ConditionalExpression.java b/linq4j/src/main/java/org/apache/calcite/linq4j/tree/ConditionalExpression.java
index c4ab0869ab91..6fbcc1ef1f3e 100644
--- a/linq4j/src/main/java/org/apache/calcite/linq4j/tree/ConditionalExpression.java
+++ b/linq4j/src/main/java/org/apache/calcite/linq4j/tree/ConditionalExpression.java
@@ -36,7 +36,7 @@
  * "if (c0) e0 else if (c1) e1 ... else if (c<sub>n-1</sub>) e<sub>n-1</sub>".
  */
 public class ConditionalExpression extends AbstractNode {
-  final List<Node> expressionList;
+  public final List<Node> expressionList;
 
   public ConditionalExpression(List<Node> expressionList, Type type) {
     super(ExpressionType.Conditional, type);