diff --git a/toscaparser/tests/test_toscatpl.py b/toscaparser/tests/test_toscatpl.py
index 6f12167..2a9018e 100644
--- a/toscaparser/tests/test_toscatpl.py
+++ b/toscaparser/tests/test_toscatpl.py
@@ -388,29 +388,34 @@ class ToscaTemplateTest(TestCase):
             os.path.dirname(os.path.abspath(__file__)),
             "data/tosca_single_instance_wordpress.yaml")
         tosca = ToscaTemplate(tosca_tpl)
-        self.assertIsNotNone(tosca.topology_template.custom_defs)
+        self.assertTrue(tosca.topology_template.custom_defs)
 
     def test_local_template_with_url_import(self):
         tosca_tpl = os.path.join(
             os.path.dirname(os.path.abspath(__file__)),
             "data/tosca_single_instance_wordpress_with_url_import.yaml")
         tosca = ToscaTemplate(tosca_tpl)
-        self.assertIsNotNone(tosca.topology_template.custom_defs)
+        self.assertTrue(tosca.topology_template.custom_defs)
 
     def test_url_template_with_local_relpath_import(self):
         tosca_tpl = ('https://raw.githubusercontent.com/openstack/'
                      'tosca-parser/master/toscaparser/tests/data/'
                      'tosca_single_instance_wordpress.yaml')
         tosca = ToscaTemplate(tosca_tpl, False)
-        self.assertIsNotNone(tosca.topology_template.custom_defs)
+        self.assertTrue(tosca.topology_template.custom_defs)
 
     def test_url_template_with_local_abspath_import(self):
-        tosca_tpl = ('http://tinyurl.com/nfbwjwd')
+        tosca_tpl = ('https://raw.githubusercontent.com/openstack/'
+                     'tosca-parser/master/toscaparser/tests/data/'
+                     'tosca_single_instance_wordpress_with_local_abspath_'
+                     'import.yaml')
         err = self.assertRaises(ImportError, ToscaTemplate, tosca_tpl, False)
         self.assertEqual('Absolute file name cannot be used for a URL-based '
                          'input template.', err.__str__())
 
     def test_url_template_with_url_import(self):
-        tosca_tpl = ('http://tinyurl.com/ow76273')
+        tosca_tpl = ('https://raw.githubusercontent.com/openstack/'
+                     'tosca-parser/master/toscaparser/tests/data/'
+                     'tosca_single_instance_wordpress_with_url_import.yaml')
         tosca = ToscaTemplate(tosca_tpl, False)
-        self.assertIsNotNone(tosca.topology_template.custom_defs)
+        self.assertTrue(tosca.topology_template.custom_defs)