diff --git a/tests/gis_tests/geos_tests/test_geos.py b/tests/gis_tests/geos_tests/test_geos.py
index b0843c9bd2..4fda24cc24 100644
--- a/tests/gis_tests/geos_tests/test_geos.py
+++ b/tests/gis_tests/geos_tests/test_geos.py
@@ -17,6 +17,7 @@ from django.contrib.gis.geos import (
 )
 from django.contrib.gis.geos.base import GEOSBase
 from django.contrib.gis.shortcuts import numpy
+from django.test import mock
 from django.utils import six
 from django.utils.encoding import force_bytes
 from django.utils.six.moves import range
@@ -896,7 +897,19 @@ class GEOSTest(unittest.TestCase, TestDataMixin):
         """ Testing `transform` method (SRID match) """
         # transform() should no-op if source & dest SRIDs match,
         # regardless of whether GDAL is available.
-        if gdal.HAS_GDAL:
+        g = GEOSGeometry('POINT (-104.609 38.255)', 4326)
+        gt = g.tuple
+        g.transform(4326)
+        self.assertEqual(g.tuple, gt)
+        self.assertEqual(g.srid, 4326)
+
+        g = GEOSGeometry('POINT (-104.609 38.255)', 4326)
+        g1 = g.transform(4326, clone=True)
+        self.assertEqual(g1.tuple, g.tuple)
+        self.assertEqual(g1.srid, 4326)
+        self.assertIsNot(g1, g, "Clone didn't happen")
+
+        with mock.patch('django.contrib.gis.gdal.HAS_GDAL', False):
             g = GEOSGeometry('POINT (-104.609 38.255)', 4326)
             gt = g.tuple
             g.transform(4326)
@@ -909,24 +922,6 @@ class GEOSTest(unittest.TestCase, TestDataMixin):
             self.assertEqual(g1.srid, 4326)
             self.assertIsNot(g1, g, "Clone didn't happen")
 
-        old_has_gdal = gdal.HAS_GDAL
-        try:
-            gdal.HAS_GDAL = False
-
-            g = GEOSGeometry('POINT (-104.609 38.255)', 4326)
-            gt = g.tuple
-            g.transform(4326)
-            self.assertEqual(g.tuple, gt)
-            self.assertEqual(g.srid, 4326)
-
-            g = GEOSGeometry('POINT (-104.609 38.255)', 4326)
-            g1 = g.transform(4326, clone=True)
-            self.assertEqual(g1.tuple, g.tuple)
-            self.assertEqual(g1.srid, 4326)
-            self.assertIsNot(g1, g, "Clone didn't happen")
-        finally:
-            gdal.HAS_GDAL = old_has_gdal
-
     def test_transform_nosrid(self):
         """ Testing `transform` method (no SRID or negative SRID) """
 
@@ -942,20 +937,14 @@ class GEOSTest(unittest.TestCase, TestDataMixin):
         g = GEOSGeometry('POINT (-104.609 38.255)', srid=-1)
         self.assertRaises(GEOSException, g.transform, 2774, clone=True)
 
-    @skipUnless(HAS_GDAL, "GDAL is required.")
+    @mock.patch('django.contrib.gis.gdal.HAS_GDAL', False)
     def test_transform_nogdal(self):
         """ Testing `transform` method (GDAL not available) """
-        old_has_gdal = gdal.HAS_GDAL
-        try:
-            gdal.HAS_GDAL = False
+        g = GEOSGeometry('POINT (-104.609 38.255)', 4326)
+        self.assertRaises(GEOSException, g.transform, 2774)
 
-            g = GEOSGeometry('POINT (-104.609 38.255)', 4326)
-            self.assertRaises(GEOSException, g.transform, 2774)
-
-            g = GEOSGeometry('POINT (-104.609 38.255)', 4326)
-            self.assertRaises(GEOSException, g.transform, 2774, clone=True)
-        finally:
-            gdal.HAS_GDAL = old_has_gdal
+        g = GEOSGeometry('POINT (-104.609 38.255)', 4326)
+        self.assertRaises(GEOSException, g.transform, 2774, clone=True)
 
     def test_extent(self):
         "Testing `extent` method."