diff --git a/native/proto/src/proto/expr.proto b/native/proto/src/proto/expr.proto
index 88940f386..61656c0cc 100644
--- a/native/proto/src/proto/expr.proto
+++ b/native/proto/src/proto/expr.proto
@@ -404,6 +404,7 @@ message ScalarFunc {
   string func = 1;
   repeated Expr args = 2;
   DataType return_type = 3;
+  bool fail_on_error = 4;
 }
 
 message BitwiseAnd {
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 51b32b7df..b851a7e9a 100644
--- a/spark/src/main/scala/org/apache/comet/serde/QueryPlanSerde.scala
+++ b/spark/src/main/scala/org/apache/comet/serde/QueryPlanSerde.scala
@@ -1924,7 +1924,12 @@ object QueryPlanSerde extends Logging with ShimQueryPlanSerde with CometExprShim
               // `scale` must be Int64 type in DataFusion
               val scaleExpr = exprToProtoInternal(Literal(_scale.toLong, LongType), inputs)
               val optExpr =
-                scalarExprToProtoWithReturnType("round", r.dataType, childExpr, scaleExpr)
+                scalarExprToProtoWithReturnTypeAnsi(
+                  "round",
+                  r.dataType,
+                  r.ansiEnabled,
+                  childExpr,
+                  scaleExpr)
               optExprWithInfo(optExpr, expr, r.child)
           }
 
@@ -2610,6 +2615,20 @@ object QueryPlanSerde extends Logging with ShimQueryPlanSerde with CometExprShim
     }
   }
 
+  def scalarExprToProtoWithReturnTypeAnsi(
+      funcName: String,
+      returnType: DataType,
+      failOnError: Boolean,
+      args: Option[Expr]*): Option[Expr] = {
+    val builder = ExprOuterClass.ScalarFunc.newBuilder()
+    builder.setFunc(funcName)
+    builder.setFailOnError(failOnError)
+    serializeDataType(returnType).flatMap { t =>
+      builder.setReturnType(t)
+      scalarExprToProto0(builder, args: _*)
+    }
+  }
+
   def scalarExprToProto(funcName: String, args: Option[Expr]*): Option[Expr] = {
     val builder = ExprOuterClass.ScalarFunc.newBuilder()
     builder.setFunc(funcName)