diff --git a/core/src/execution/datafusion/planner.rs b/core/src/execution/datafusion/planner.rs
index a5bcf5654..6cea11d71 100644
--- a/core/src/execution/datafusion/planner.rs
+++ b/core/src/execution/datafusion/planner.rs
@@ -563,7 +563,7 @@ impl PhysicalPlanner {
                 let child = self.create_expr(expr.child.as_ref().unwrap(), input_schema)?;
                 Ok(Arc::new(NotExpr::new(child)))
             }
-            ExprStruct::Negative(expr) => {
+            ExprStruct::UnaryMinus(expr) => {
                 let child: Arc<dyn PhysicalExpr> =
                     self.create_expr(expr.child.as_ref().unwrap(), input_schema.clone())?;
                 let result = negative::create_negate_expr(child, expr.fail_on_error);
diff --git a/core/src/execution/proto/expr.proto b/core/src/execution/proto/expr.proto
index 9c6049013..5192bbd4c 100644
--- a/core/src/execution/proto/expr.proto
+++ b/core/src/execution/proto/expr.proto
@@ -65,7 +65,7 @@ message Expr {
     CaseWhen caseWhen = 38;
     In in = 39;
     Not not = 40;
-    Negative negative = 41;
+    UnaryMinus unary_minus = 41;
     BitwiseShiftRight bitwiseShiftRight = 42;
     BitwiseShiftLeft bitwiseShiftLeft = 43;
     IfExpr if = 44;
@@ -452,7 +452,7 @@ message Not {
   Expr child = 1;
 }
 
-message Negative {
+message UnaryMinus {
   Expr child = 1;
   bool fail_on_error = 2;
 }
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 8d81b57c4..448c4ff0f 100644
--- a/spark/src/main/scala/org/apache/comet/serde/QueryPlanSerde.scala
+++ b/spark/src/main/scala/org/apache/comet/serde/QueryPlanSerde.scala
@@ -1987,13 +1987,13 @@ object QueryPlanSerde extends Logging with ShimQueryPlanSerde with CometExprShim
         case UnaryMinus(child, failOnError) =>
           val childExpr = exprToProtoInternal(child, inputs)
           if (childExpr.isDefined) {
-            val builder = ExprOuterClass.Negative.newBuilder()
+            val builder = ExprOuterClass.UnaryMinus.newBuilder()
             builder.setChild(childExpr.get)
             builder.setFailOnError(failOnError)
             Some(
               ExprOuterClass.Expr
                 .newBuilder()
-                .setNegative(builder)
+                .setUnaryMinus(builder)
                 .build())
           } else {
             withInfo(expr, child)