diff --git a/tests/scripts/depends.py b/tests/scripts/depends.py
index fa17e13..55c7a5a 100755
--- a/tests/scripts/depends.py
+++ b/tests/scripts/depends.py
@@ -541,7 +541,7 @@
                             default=True)
         options = parser.parse_args()
         os.chdir(options.directory)
-        conf = config.ConfigFile(options.config)
+        conf = config.MbedtlsConfig(options.config)
         domain_data = DomainData(options, conf)
 
         if options.tasks is True: