diff --git a/cpp/src/arrow/acero/source_node.cc b/cpp/src/arrow/acero/source_node.cc
index ac34e4b6a09fc..2d3e2a1da1735 100644
--- a/cpp/src/arrow/acero/source_node.cc
+++ b/cpp/src/arrow/acero/source_node.cc
@@ -407,7 +407,7 @@ struct SchemaSourceNode : public SourceNode {
 struct RecordBatchReaderSourceNode : public SourceNode {
   RecordBatchReaderSourceNode(ExecPlan* plan, std::shared_ptr<Schema> schema,
                               arrow::AsyncGenerator<std::optional<ExecBatch>> generator)
-      : SourceNode(plan, schema, generator, Ordering::Implicit()) {}
+      : SourceNode(plan, schema, generator) {}
 
   static Result<ExecNode*> Make(ExecPlan* plan, std::vector<ExecNode*> inputs,
                                 const ExecNodeOptions& options) {