diff --git a/seminar/management/commands/testdata.py b/seminar/management/commands/testdata.py
index 0fa189a1..6a7fb30c 100644
--- a/seminar/management/commands/testdata.py
+++ b/seminar/management/commands/testdata.py
@@ -23,11 +23,11 @@ class Command(BaseCommand):
         if os.path.exists(dbfile):
             os.rename(dbfile, dbfile + '.old')
             self.stderr.write('Stara databaze prejmenovana na "%s"' % (dbfile + '.old'))
-        call_command('migrate', noinput=True)
+        call_command('migrate', no_input=True)
         self.stdout.write('Vytvarim uzivatele "admin" (heslo "admin") a pseudo-nahodna data ...')
         create_test_data(size=8)
-        self.stdout.write('Vytvoreno %d uzivatelu, %d skol, %d resitelu, %d rocniku, %d cisel,' 
-               ' %d problemu, %d reseni.'.format(User.objects.count(), Skola.objects.count(), 
+        self.stdout.write('Vytvoreno {} uzivatelu, {} skol, {} resitelu, {} rocniku, {} cisel,' 
+               ' {} problemu, {} reseni.'.format(User.objects.count(), Skola.objects.count(), 
                     Resitel.objects.count(), Rocnik.objects.count(), Cislo.objects.count(), 
                     Problem.objects.count(), Reseni.objects.count()))