diff --git a/analytics/fuel_analytics/test/api/resources/utils/test_nodes_to_csv.py b/analytics/fuel_analytics/test/api/resources/utils/test_nodes_to_csv.py
index 20d634c..a93eb26 100644
--- a/analytics/fuel_analytics/test/api/resources/utils/test_nodes_to_csv.py
+++ b/analytics/fuel_analytics/test/api/resources/utils/test_nodes_to_csv.py
@@ -120,7 +120,7 @@ class NodesToCsvExportTest(InstStructureTest, DbTest):
             exporter.get_node_keys_paths()
         flatten_nodes = exporter.get_flatten_nodes(
             structure_paths, cluster_paths, node_paths, inst_structures)
-        self.assertTrue(isinstance(flatten_nodes, types.GeneratorType))
+        self.assertIsInstance(flatten_nodes, types.GeneratorType)
         pos_mn_uid = csv_paths.index(['master_node_uid'])
         pos_cluster_id = csv_paths.index(['cluster_id'])
         pos_status = csv_paths.index(['status'])
@@ -139,7 +139,7 @@ class NodesToCsvExportTest(InstStructureTest, DbTest):
                 installations_num=installations_num)
             # Filtering installation structures
             result = exporter.export_nodes(inst_structures)
-            self.assertTrue(isinstance(result, types.GeneratorType))
+            self.assertIsInstance(result, types.GeneratorType)
             output = six.StringIO(list(result))
             reader = csv.reader(output)
             for _ in reader:
diff --git a/analytics/fuel_analytics/test/api/resources/utils/test_oswl_stats_to_csv.py b/analytics/fuel_analytics/test/api/resources/utils/test_oswl_stats_to_csv.py
index d794bac..191206e 100644
--- a/analytics/fuel_analytics/test/api/resources/utils/test_oswl_stats_to_csv.py
+++ b/analytics/fuel_analytics/test/api/resources/utils/test_oswl_stats_to_csv.py
@@ -68,7 +68,7 @@ class OswlStatsToCsvTest(OswlTest, DbTest):
             oswls = self.generate_oswls(2, resource_type)
             flatten_resources = exporter.get_flatten_resources(
                 resource_type, oswl_keys_paths, resource_keys_paths, oswls, {})
-            self.assertTrue(isinstance(flatten_resources, types.GeneratorType))
+            self.assertIsInstance(flatten_resources, types.GeneratorType)
             for _ in flatten_resources:
                 pass
 
@@ -141,7 +141,7 @@ class OswlStatsToCsvTest(OswlTest, DbTest):
                 # Checking export
                 result = exporter.export(resource_type, oswls,
                                          datetime.utcnow().date(), {})
-                self.assertTrue(isinstance(result, types.GeneratorType))
+                self.assertIsInstance(result, types.GeneratorType)
                 output = six.StringIO(list(result))
                 reader = csv.reader(output)
                 for _ in reader:
@@ -151,7 +151,7 @@ class OswlStatsToCsvTest(OswlTest, DbTest):
         exporter = OswlStatsToCsv()
         for resource_type in self.RESOURCE_TYPES:
             result = exporter.export(resource_type, [], {}, None)
-            self.assertTrue(isinstance(result, types.GeneratorType))
+            self.assertIsInstance(result, types.GeneratorType)
             output = six.StringIO(list(result))
             reader = csv.reader(output)
             for _ in reader:
@@ -262,7 +262,7 @@ class OswlStatsToCsvTest(OswlTest, DbTest):
     def test_fill_date_gaps_empty_data_is_not_failed(self):
         exporter = OswlStatsToCsv()
         oswls = exporter.fill_date_gaps([], datetime.utcnow().date())
-        self.assertTrue(isinstance(oswls, types.GeneratorType))
+        self.assertIsInstance(oswls, types.GeneratorType)
 
     def test_resource_data_on_oswl_duplication(self):
         exporter = OswlStatsToCsv()
@@ -347,7 +347,7 @@ class OswlStatsToCsvTest(OswlTest, DbTest):
                 oswls = get_oswls(resource_type)
                 result = exporter.export(resource_type, oswls,
                                          datetime.utcnow().date(), {})
-                self.assertTrue(isinstance(result, types.GeneratorType))
+                self.assertIsInstance(result, types.GeneratorType)
                 output = six.StringIO(list(result))
                 reader = csv.reader(output)
                 for _ in reader:
diff --git a/analytics/fuel_analytics/test/api/resources/utils/test_plugins_to_csv.py b/analytics/fuel_analytics/test/api/resources/utils/test_plugins_to_csv.py
index f9f1267..7b75d82 100644
--- a/analytics/fuel_analytics/test/api/resources/utils/test_plugins_to_csv.py
+++ b/analytics/fuel_analytics/test/api/resources/utils/test_plugins_to_csv.py
@@ -53,7 +53,7 @@ class PluginsToCsvExportTest(InstStructureTest, DbTest):
             exporter.get_plugin_keys_paths()
         flatten_plugins = exporter.get_flatten_plugins(
             structure_paths, cluster_paths, plugins_paths, inst_structures)
-        self.assertTrue(isinstance(flatten_plugins, types.GeneratorType))
+        self.assertIsInstance(flatten_plugins, types.GeneratorType)
         pos_mn_uid = csv_paths.index(['master_node_uid'])
         pos_cluster_id = csv_paths.index(['cluster_id'])
         for flatten_plugin in flatten_plugins:
@@ -70,7 +70,7 @@ class PluginsToCsvExportTest(InstStructureTest, DbTest):
                 installations_num=installations_num)
             # Filtering installation structures
             result = exporter.export_plugins(inst_structures)
-            self.assertTrue(isinstance(result, types.GeneratorType))
+            self.assertIsInstance(result, types.GeneratorType)
             output = six.StringIO(list(result))
             reader = csv.reader(output)
             for _ in reader:
diff --git a/analytics/fuel_analytics/test/api/resources/utils/test_stats_to_csv.py b/analytics/fuel_analytics/test/api/resources/utils/test_stats_to_csv.py
index 8fb4697..e1d044c 100644
--- a/analytics/fuel_analytics/test/api/resources/utils/test_stats_to_csv.py
+++ b/analytics/fuel_analytics/test/api/resources/utils/test_stats_to_csv.py
@@ -82,7 +82,7 @@ class StatsToCsvExportTest(InstStructureTest, DbTest):
             exporter.get_cluster_keys_paths()
         flatten_clusters = exporter.get_flatten_clusters(
             structure_paths, cluster_paths, inst_structures, [])
-        self.assertTrue(isinstance(flatten_clusters, types.GeneratorType))
+        self.assertIsInstance(flatten_clusters, types.GeneratorType)
         for flatten_cluster in flatten_clusters:
             self.assertEquals(len(csv_paths), len(flatten_cluster))
 
@@ -96,9 +96,9 @@ class StatsToCsvExportTest(InstStructureTest, DbTest):
             exporter.get_cluster_keys_paths()
         flatten_clusters = exporter.get_flatten_clusters(
             structure_paths, cluster_paths, inst_structures, [])
-        self.assertTrue(isinstance(flatten_clusters, types.GeneratorType))
+        self.assertIsInstance(flatten_clusters, types.GeneratorType)
         result = export_utils.flatten_data_as_csv(csv_paths, flatten_clusters)
-        self.assertTrue(isinstance(result, types.GeneratorType))
+        self.assertIsInstance(result, types.GeneratorType)
         output = six.StringIO(list(result))
         reader = csv.reader(output)
         # Pop columns names from reader
@@ -128,7 +128,7 @@ class StatsToCsvExportTest(InstStructureTest, DbTest):
             installations_num=installations_num)
         exporter = StatsToCsv()
         result = exporter.export_clusters(inst_structures, [])
-        self.assertTrue(isinstance(result, types.GeneratorType))
+        self.assertIsInstance(result, types.GeneratorType)
 
     def test_filter_by_date(self):
         exporter = StatsToCsv()
@@ -140,7 +140,7 @@ class StatsToCsvExportTest(InstStructureTest, DbTest):
                 installations_num=num)
             # Filtering installation structures
             result = exporter.export_clusters(inst_structures, [])
-            self.assertTrue(isinstance(result, types.GeneratorType))
+            self.assertIsInstance(result, types.GeneratorType)
             output = six.StringIO(list(result))
             reader = csv.reader(output)
             for _ in reader: