diff --git a/models/TYLnep/TYLnep_500k_15_1.py b/models/TYLnep/TYLnep_500k_15_1.py
index 9a1a0f834314b02df25c4e4974f75c83467a7bca..952199f08ff6e9c36b121641564277eee66bef29 100644
--- a/models/TYLnep/TYLnep_500k_15_1.py
+++ b/models/TYLnep/TYLnep_500k_15_1.py
@@ -97,6 +97,8 @@ def parms(d={}):
     p['Young'] = 15000.      # [MPa]
     p['Poisson'] = 0.3       # [-]
 
+    p['dt0'] = 0.2       # [s]
+
     p.update(d)
     return p