diff --git a/tryton/gui/window/win_export.py b/tryton/gui/window/win_export.py
index 06a1f70521..963b2d8962 100644
--- a/tryton/gui/window/win_export.py
+++ b/tryton/gui/window/win_export.py
@@ -325,7 +325,7 @@ class WinExport(object):
         try:
             new_id = rpc.execute(*args)
         except TrytonServerError, exception:
-            new_id = common.process_exception(exception, self.dialog, *args)
+            new_id = common.process_exception(exception, *args)
             if not new_id:
                 return
         self.predef_model.append((
@@ -346,7 +346,7 @@ class WinExport(object):
         try:
             rpc.execute(*args)
         except TrytonServerError, exception:
-            if not common.process_exception(exception, self.dialog, *args):
+            if not common.process_exception(exception, *args):
                 return
         for i in range(len(self.predef_model)):
             if self.predef_model[i][0] == export_id:
@@ -442,6 +442,6 @@ class WinExport(object):
             datas = rpc.execute('model', model,
                     'export_data', ids, fields, ctx)
         except TrytonServerError, exception:
-            common.process_exception(exception, self.dialog)
+            common.process_exception(exception)
             return []
         return datas
diff --git a/tryton/gui/window/win_import.py b/tryton/gui/window/win_import.py
index 80e8eb22f1..2b97dd7871 100644
--- a/tryton/gui/window/win_import.py
+++ b/tryton/gui/window/win_import.py
@@ -228,7 +228,7 @@ class WinImport(object):
         try:
             return rpc.execute(*args)
         except TrytonServerError, exception:
-            return common.process_exception(exception, self.dialog, *args)
+            return common.process_exception(exception, *args)
 
     def on_row_expanded(self, treeview, iter, path):
         child = self.model1.iter_children(iter)
@@ -242,8 +242,7 @@ class WinImport(object):
     def sig_autodetect(self, widget=None):
         fname = self.import_csv_file.get_filename()
         if not fname:
-            common.message(_('You must select an import file first!'),
-                    self.dialog)
+            common.message(_('You must select an import file first!'))
             return True
         csvsep = self.import_csv_sep.get_text()
         csvdel = self.import_csv_del.get_text()
@@ -255,8 +254,7 @@ class WinImport(object):
             data = csv.reader(open(fname, 'rb'), quotechar=csvdel,
                     delimiter=csvsep)
         except IOError:
-            common.warning(_('Error opening CSV file'), self.dialog,
-                    _('Error'))
+            common.warning(_('Error opening CSV file'), _('Error'))
             return True
         self.sig_unsel_all()
         word = ''
@@ -283,9 +281,8 @@ class WinImport(object):
                     name = self.fields[word][0]
                     field = word
                 else:
-                    common.warning(
-                            _('Error processing the file at field %s.') %
-                            word, self.dialog, _('Error'))
+                    common.warning(_('Error processing the file at field %s.')
+                        % word, _('Error'))
                     return True
                 num = self.model2.append()
                 self.model2.set(num, 0, name, 1, field)
@@ -352,7 +349,7 @@ class WinImport(object):
             res = rpc.execute('model', model, 'import_data', fields, datas,
                     rpc.CONTEXT)
         except TrytonServerError, exception:
-            common.process_exception(exception, self.dialog)
+            common.process_exception(exception)
             return False
         if res[0] >= 0:
             if res[0] == 1: