diff --git a/src/pyfmi/fmi_algorithm_drivers.py b/src/pyfmi/fmi_algorithm_drivers.py
index 923c8a01..b67b4d3c 100644
--- a/src/pyfmi/fmi_algorithm_drivers.py
+++ b/src/pyfmi/fmi_algorithm_drivers.py
@@ -207,7 +207,7 @@ def __init__(self, *args, **kw):
             'sensitivities':None,
             'write_scaled_result':False,
             'result_file_name':'',
-            'with_jacobian':"Default",
+            'with_jacobian':True,
             'logging':False,
             'dynamic_diagnostics':False,
             'result_handling':"binary",