diff --git a/awx/main/filters.py b/awx/main/filters.py
index 3191107725..ef1ca37b4a 100644
--- a/awx/main/filters.py
+++ b/awx/main/filters.py
@@ -61,6 +61,7 @@ class FieldLookupBackend(BaseFilterBackend):
         return field
 
     def to_python_boolean(self, value, allow_none=False):
+        value = unicode(value)
         if value.lower() in ('true', '1'):
             return True
         elif value.lower() in ('false', '0'):
@@ -71,6 +72,7 @@ class FieldLookupBackend(BaseFilterBackend):
             raise ValueError(u'Unable to convert "%s" to boolean' % unicode(value))
 
     def to_python_related(self, value):
+        value = unicode(value)
         if value.lower() in ('none', 'null'):
             return None
         else:
diff --git a/awx/main/tests/users.py b/awx/main/tests/users.py
index 385b8d6932..3a6f9dc492 100644
--- a/awx/main/tests/users.py
+++ b/awx/main/tests/users.py
@@ -406,6 +406,12 @@ class UsersTest(BaseTest):
         url = '%s?is_superuser=notatbool' % base_url
         self.check_get_list(url, self.super_django_user, base_qs, expect=400)
 
+        # Filter by custom __int suffix on boolean field.
+        url = '%s?is_superuser__int=1' % base_url
+        qs = base_qs.filter(is_superuser=True)
+        self.assertTrue(qs.count())
+        self.check_get_list(url, self.super_django_user, qs)
+
         # Filter by is_staff (field not exposed via API).  FIXME: Should 
         # eventually not be allowed!
         url = '%s?is_staff=true' % base_url