diff --git a/spark/src/main/scala/org/apache/comet/serde/QueryPlanSerde.scala b/spark/src/main/scala/org/apache/comet/serde/QueryPlanSerde.scala
index e0b490f9f..65de37c83 100644
--- a/spark/src/main/scala/org/apache/comet/serde/QueryPlanSerde.scala
+++ b/spark/src/main/scala/org/apache/comet/serde/QueryPlanSerde.scala
@@ -2287,7 +2287,7 @@ object QueryPlanSerde extends Logging with ShimQueryPlanSerde with CometExprShim
                 .setCreateNamedStruct(structBuilder)
                 .build())
           } else {
-            withInfo(expr, struct.valExprs: _*)
+            withInfo(expr, "unsupported arguments for CreateNamedStruct", struct.valExprs: _*)
             None
           }
 
diff --git a/spark/src/test/scala/org/apache/comet/CometExpressionSuite.scala b/spark/src/test/scala/org/apache/comet/CometExpressionSuite.scala
index d257b7bf3..cb2069ed2 100644
--- a/spark/src/test/scala/org/apache/comet/CometExpressionSuite.scala
+++ b/spark/src/test/scala/org/apache/comet/CometExpressionSuite.scala
@@ -1734,7 +1734,7 @@ class CometExpressionSuite extends CometTestBase with AdaptiveSparkPlanHelper {
           // Use inside a nullable statement to make sure isnan has correct behavior for null input
           checkSparkAnswerAndOperator(
             "SELECT CASE WHEN (_1 > 0) THEN NULL ELSE isnan(_1) END FROM tbl")
-          }
+        }
       }
     }
   }