diff --git a/models/dayabay_v0.py b/models/dayabay_v0.py
index 3d332d7e81e8f5e525062a068bb03590ad78d855..3d92958b3fe8af906aa6975e255bbecda59af405 100644
--- a/models/dayabay_v0.py
+++ b/models/dayabay_v0.py
@@ -42,6 +42,7 @@ def model_dayabay_v0():
         storage ^= load_parameters({'path': 'reactor'    , 'load': datasource/'parameters/reactor_thermal_power_nominal.yaml'     , 'replicate': list_reactors })
         storage ^= load_parameters({'path': 'reactor'    , 'load': datasource/'parameters/reactor_snf.yaml'                       , 'replicate': list_reactors })
         storage ^= load_parameters({'path': 'reactor'    , 'load': datasource/'parameters/reactor_offequilibrium_correction.yaml' , 'replicate': list_reactors_isotopes })
+        storage ^= load_parameters({'path': 'reactor'    , 'load': datasource/'parameters/reactor_fission_fraction_scale.yaml'    , 'replicate': list_reactors })
 
         nuisanceall = Sum('nuisance total')
         storage['stat.nuisance.all'] = nuisanceall