diff --git a/django/contrib/gis/tests/geoapp/tests.py b/django/contrib/gis/tests/geoapp/tests.py
index fbe30e8841..cd3cec3074 100644
--- a/django/contrib/gis/tests/geoapp/tests.py
+++ b/django/contrib/gis/tests/geoapp/tests.py
@@ -191,7 +191,8 @@ class GeoModelTest(TestCase):
         cities1 = City.objects.all()
         # Only PostGIS would support a 'select *' query because of its recognized
         # HEXEWKB format for geometry fields
-        cities2 = City.objects.raw('select id, name, asText(point) from geoapp_city')
+        as_text = 'ST_AsText' if postgis else 'asText'
+        cities2 = City.objects.raw('select id, name, %s(point) from geoapp_city' % as_text)
         self.assertEqual(len(cities1), len(list(cities2)))
         self.assertTrue(isinstance(cities2[0].point, Point))
 
diff --git a/docs/ref/contrib/gis/tutorial.txt b/docs/ref/contrib/gis/tutorial.txt
index 15863aee7b..ec265342b3 100644
--- a/docs/ref/contrib/gis/tutorial.txt
+++ b/docs/ref/contrib/gis/tutorial.txt
@@ -674,8 +674,8 @@ __ http://spatialreference.org/ref/epsg/32140/
 .. admonition:: Raw queries
 
     When using :doc:`raw queries </topics/db/sql>`, you should generally wrap
-    your geometry fields with the ``asText()`` SQL function so as the field
-    value will be recognized by GEOS::
+    your geometry fields with the ``asText()`` SQL function (or ``ST_AsText``
+    for PostGIS) so as the field value will be recognized by GEOS::
 
         City.objects.raw('SELECT id, name, asText(point) from myapp_city')