diff -r a6d19bc7fed3 -r 6cd938c29ca3 cubicweb/test/unittest_cwconfig.py
--- a/cubicweb/test/unittest_cwconfig.py	Tue Mar 31 18:12:20 2020 +0200
+++ b/cubicweb/test/unittest_cwconfig.py	Tue Mar 31 18:22:05 2020 +0200
@@ -196,12 +196,12 @@
             del os.environ['CW_BASE_URL']
 
     def test_config_value_from_environment_int(self):
-        self.assertEqual(self.config['connections-pool-size'], 4)
-        os.environ['CW_CONNECTIONS_POOL_SIZE'] = '6'
+        self.assertEqual(self.config['connections-pool-max-size'], 0)
+        os.environ['CW_CONNECTIONS_POOL_MAX_SIZE'] = '6'
         try:
-            self.assertEqual(self.config['connections-pool-size'], 6)
+            self.assertEqual(self.config['connections-pool-max-size'], 6)
         finally:
-            del os.environ['CW_CONNECTIONS_POOL_SIZE']
+            del os.environ['CW_CONNECTIONS_POOL_MAX_SIZE']
 
     def test_config_value_from_environment_yn(self):
         self.assertEqual(self.config['allow-email-login'], False)