diff --git a/History.md b/History.md
index a8c49162..4a1ac2ec 100644
--- a/History.md
+++ b/History.md
@@ -1,6 +1,7 @@
 # v4.0.3
 
 * [FIXED] Issue where invalid rows were not accounted for when skipRows was set [#317](https://github.com/C2FO/fast-csv/issues/317)
+* [FIXED] Issue where readableObjectMode was not set to false when formatting [#319](https://github.com/C2FO/fast-csv/issues/319)
 
 # v4.0.2
 
diff --git a/packages/format/src/CsvFormatterStream.ts b/packages/format/src/CsvFormatterStream.ts
index 6eb8c1af..5e773b89 100644
--- a/packages/format/src/CsvFormatterStream.ts
+++ b/packages/format/src/CsvFormatterStream.ts
@@ -11,7 +11,7 @@ export class CsvFormatterStream<I extends Row, O extends Row> extends Transform
     private hasWrittenBOM = false;
 
     public constructor(formatterOptions: FormatterOptions<I, O>) {
-        super({ objectMode: formatterOptions.objectMode });
+        super({ writableObjectMode: formatterOptions.objectMode });
         this.formatterOptions = formatterOptions;
         this.rowFormatter = new RowFormatter(formatterOptions);
         // if writeBOM is false then set to true