diff --git a/cubes/formatters.py b/cubes/formatters.py
index 01d9707f..bf53e9ff 100644
--- a/cubes/formatters.py
+++ b/cubes/formatters.py
@@ -95,7 +95,6 @@ def csv_generator_p3(records, fields, include_header=True, header=None,
     def _row_string(row):
         writer.writerow(row)
         data = queue.getvalue()
-        queue.truncate(0)
 
         return data