diff --git a/django_select2/forms.py b/django_select2/forms.py
index 8317a7dd..55d52822 100644
--- a/django_select2/forms.py
+++ b/django_select2/forms.py
@@ -419,6 +419,8 @@ def get_queryset(self):
         """
         if self.queryset is not None:
             queryset = self.queryset
+        elif hasattr(self.choices, 'queryset'):
+            queryset = self.choices.queryset
         elif self.model is not None:
             queryset = self.model._default_manager.all()
         else:
diff --git a/tests/testapp/forms.py b/tests/testapp/forms.py
index e858b7f1..976c3efc 100644
--- a/tests/testapp/forms.py
+++ b/tests/testapp/forms.py
@@ -186,7 +186,6 @@ class AddressChainedSelect2WidgetForm(forms.Form):
         queryset=Country.objects.all(),
         label='Country',
         widget=ModelSelect2Widget(
-            model=Country,
             search_fields=['name__icontains'],
             max_results=500,
             dependent_fields={'city': 'cities'},
@@ -198,7 +197,6 @@ class AddressChainedSelect2WidgetForm(forms.Form):
         queryset=City.objects.all(),
         label='City',
         widget=ModelSelect2Widget(
-            model=City,
             search_fields=['name__icontains'],
             dependent_fields={'country': 'country'},
             max_results=500,