diff --git a/django/contrib/admin/widgets.py b/django/contrib/admin/widgets.py
index 1978b3e..61b05b1 100644
--- a/django/contrib/admin/widgets.py
+++ b/django/contrib/admin/widgets.py
@@ -100,7 +100,7 @@ def url_params_from_lookup_dict(lookups):
     if lookups and hasattr(lookups, 'items'):
         items = []
         for k, v in lookups.items():
-            if isinstance(v, list):
+            if isinstance(v, (tuple, list)):
                 v = u','.join([str(x) for x in v])
             elif isinstance(v, bool):
                 # See django.db.fields.BooleanField.get_prep_lookup
diff --git a/tests/regressiontests/admin_widgets/tests.py b/tests/regressiontests/admin_widgets/tests.py
index 7ad74a3..9fde201 100644
--- a/tests/regressiontests/admin_widgets/tests.py
+++ b/tests/regressiontests/admin_widgets/tests.py
@@ -8,7 +8,8 @@ from django.contrib import admin
 from django.contrib.admin import widgets
 from django.contrib.admin.widgets import (FilteredSelectMultiple,
     AdminSplitDateTime, AdminFileWidget, ForeignKeyRawIdWidget, AdminRadioSelect,
-    RelatedFieldWidgetWrapper, ManyToManyRawIdWidget)
+    RelatedFieldWidgetWrapper, ManyToManyRawIdWidget,
+    url_params_from_lookup_dict)
 from django.core.files.storage import default_storage
 from django.core.files.uploadedfile import SimpleUploadedFile
 from django.db.models import DateField
@@ -180,6 +181,12 @@ class AdminForeignKeyRawIdWidget(DjangoTestCase):
             self.assertContains(response,
                 'Select a valid choice. That choice is not one of the available choices.')
 
+    def test_url_params_from_lookup_dict_any_iterable(self):
+        lookup1 = url_params_from_lookup_dict({'color__in': ('red', 'blue')})
+        lookup2 = url_params_from_lookup_dict({'color__in': ['red', 'blue']})
+        self.assertEqual(lookup1, {'color__in': 'red,blue'})
+        self.assertEqual(lookup1, lookup2)
+
 
 class FilteredSelectMultipleWidgetTest(TestCase):
     def test_render(self):