diff --git a/tests/model_forms/tests.py b/tests/model_forms/tests.py
index 39be824798..19f0216ec7 100644
--- a/tests/model_forms/tests.py
+++ b/tests/model_forms/tests.py
@@ -252,10 +252,12 @@ class StatusNoteCBM2mForm(forms.ModelForm):
         fields = '__all__'
         widgets = {'status': forms.CheckboxSelectMultiple}
 
+
 class CustomErrorMessageForm(forms.ModelForm):
     name1 = forms.CharField(error_messages={'invalid': 'Form custom error message.'})
 
     class Meta:
+        fields = '__all__'
         model = CustomErrorMessage
 
 
diff --git a/tests/model_formsets/tests.py b/tests/model_formsets/tests.py
index 43509c471f..09a3ba1778 100644
--- a/tests/model_formsets/tests.py
+++ b/tests/model_formsets/tests.py
@@ -399,7 +399,7 @@ class ModelFormsetTest(TestCase):
                 super(BaseAuthorFormSet, self).__init__(*args, **kwargs)
                 self.queryset = Author.objects.filter(name__startswith='Charles')
 
-        AuthorFormSet = modelformset_factory(Author, formset=BaseAuthorFormSet)
+        AuthorFormSet = modelformset_factory(Author, fields='__all__', formset=BaseAuthorFormSet)
         formset = AuthorFormSet()
         self.assertEqual(len(formset.get_queryset()), 1)