diff --git a/account_export_csv/wizard/account_export_csv.py b/account_export_csv/wizard/account_export_csv.py
index cf6bda7a..bab4118e 100644
--- a/account_export_csv/wizard/account_export_csv.py
+++ b/account_export_csv/wizard/account_export_csv.py
@@ -38,11 +38,9 @@ class AccountingWriter(object):
         data = self.encoder.encode(data)
         # write to the target stream
         self.stream.write(data)
-        # empty queue with seek() instead of truncate()
-        # see https://stackoverflow.com/a/9729516
-        # also problems with seek() if next line is shorter than previous
-        # chars of previous line are kept in the new one
-        self.queue.flush()
+        # seek() or truncate() have side effect then we reinitialize StringIO
+        # https://stackoverflow.com/questions/4330812/how-do-i-clear-a-stringio-object
+        self.queue = StringIO()
 
     def writerows(self, rows):
         for row in rows:
diff --git a/account_export_csv/wizard/account_export_csv_view.xml b/account_export_csv/wizard/account_export_csv_view.xml
index d5c7d247..0f245935 100644
--- a/account_export_csv/wizard/account_export_csv_view.xml
+++ b/account_export_csv/wizard/account_export_csv_view.xml
@@ -33,9 +33,9 @@
                     <field name="data" filename="export_filename"/>
                 </group>
                 <footer>
-                    <button name="action_manual_export_account" string="Trial Balance" type="object" icon="fa-cog" class="oe_highlight"/>
-                    <button name="action_manual_export_analytic" string="Analytic Balance (with accounts)" type="object" icon="fa-cog" class="oe_highlight"/>
-                    <button name="action_manual_export_journal_entries" string="Journal Entries" type="object" icon="fa-cog" class="oe_highlight"/>
+                    <button name="action_manual_export_account" string="Trial Balance" type="object" icon="fa-cog"/>
+                    <button name="action_manual_export_analytic" string="Analytic Balance (with accounts)" type="object" icon="fa-cog"/>
+                    <button name="action_manual_export_journal_entries" string="Journal Entries" type="object" icon="fa-cog"/>
                     or
                     <button string="Close" class="oe_link" special="cancel" />
                 </footer>