diff --git a/models/ModelBase.py b/models/ModelBase.py
index 09e43aa..ec48f83 100644
--- a/models/ModelBase.py
+++ b/models/ModelBase.py
@@ -254,7 +254,7 @@ class ModelBase(object):
     def ask_override(self):
         return self.is_training and self.iter != 0 and io.input_in_time ("Press enter in 2 seconds to override model settings.", 5 if io.is_colab() else 2 )
 
-    def ask_autobackup_hour(self, default_value):
+    def ask_autobackup_hour(self, default_value=0):
         default_autobackup_hour = self.options['autobackup_hour'] = self.load_or_def_option('autobackup_hour', default_value)
         self.options['autobackup_hour'] = io.input_int(f"Autobackup every N hour", default_autobackup_hour, add_info="0..24", help_message="Autobackup model files with preview every N hour. Latest backup located in model/<>_autobackups/01")