diff --git a/src/calibre/gui2/linux_file_dialogs.py b/src/calibre/gui2/linux_file_dialogs.py
index 4c10dffcba..e539f4a08b 100644
--- a/src/calibre/gui2/linux_file_dialogs.py
+++ b/src/calibre/gui2/linux_file_dialogs.py
@@ -152,16 +152,12 @@ def kdialog_choose_dir(window, name, title, default_dir='~', no_save_dir=False):
 
 
 def kdialog_filters(filters, all_files=True):
-    # Currently kdialog has no way to specify multiple filters
-    if all_files or not filters:
-        return '*'
-    if len(filters) == 1:
-        text, exts = filters[0]
-        return '{} ({})'.format(text, ' '.join('*.' + x for x in exts))
-    ans = set()
-    for text, exts in filters:
-        ans |= set(exts)
-    return ' '.join('*.' + x for x in ans)
+    ans = []
+    for name, exts in filters:
+        ans.append('{} ({})'.format(name, ' '.join('*.' + x for x in exts)))
+    if all_files:
+        ans.append(_('All files') + ' (*)')
+    return '\n'.join(ans)
 
 
 def kdialog_choose_files(
@@ -344,9 +340,9 @@ def check_for_linux_native_dialogs():
 
 
 if __name__ == '__main__':
-    print(repr(kdialog_choose_dir(None, 'testkddcd', 'Testing choose dir...')))
-    # print(repr(kdialog_choose_files(None, 'testkddcf', 'Testing choose files...', select_only_single_file=True, filters=[
-    #     ('moo', 'epub png'.split()), ('boo', 'docx'.split())], all_files=False)))
+    # print(repr(kdialog_choose_dir(None, 'testkddcd', 'Testing choose dir...')))
+    print(repr(kdialog_choose_files(None, 'testkddcf', 'Testing choose files...', select_only_single_file=True, filters=[
+        ('moo', 'epub png'.split()), ('boo', 'docx'.split())], all_files=True)))
     # print(repr(kdialog_choose_images(None, 'testkddci', 'Testing choose images...')))
     # print(repr(kdialog_choose_save_file(None, 'testkddcs', 'Testing choose save file...', initial_filename='moo.x')))
     # print(repr(zenity_choose_dir(None, 'testzcd', 'Testing choose dir...')))