diff --git a/parameters_monofonic.py b/parameters_monofonic.py
index ead1055..e9a50d9 100644
--- a/parameters_monofonic.py
+++ b/parameters_monofonic.py
@@ -71,7 +71,7 @@ def get_config_from_dict(monofonic_dict):
     config["setup"] = {
         "GridRes": monofonic_dict["gridres"],
         "BoxLength": monofonic_dict["boxlength"],
-        "zstart": 999.0,
+        "zstart": 99.0,
         "LPTorder": 2,
         "DoBaryons": False,
         "DoBaryonVrel": False,