diff --git a/matlab/TCV_IMAS/tcv_get_ids_core_profiles.m b/matlab/TCV_IMAS/tcv_get_ids_core_profiles.m
index 9f37ddb0a17df92c4e17492f373ce515449b1a23..64ec89f0032e07752823a1de2171e5997d560a4f 100644
--- a/matlab/TCV_IMAS/tcv_get_ids_core_profiles.m
+++ b/matlab/TCV_IMAS/tcv_get_ids_core_profiles.m
@@ -276,6 +276,7 @@ for it=1:length(ids_core_profiles.time)
   ids_core_profiles.profiles_1d{it}.ion{1}.density_thermal = ids_core_profiles.profiles_1d{it}.ion{1}.density;
   ids_core_profiles.profiles_1d{it}.ion{1}.pressure_thermal = 1.6022e-19.*ids_core_profiles.profiles_1d{it}.ion{1}.density_thermal ...
       .* ids_core_profiles.profiles_1d{it}.ion{1}.temperature;
+  ids_core_profiles.profiles_1d{it}.ion{1}.z_ion = 1;
   %
   ids_core_profiles.profiles_1d{it}.t_i_average = ids_core_profiles.profiles_1d{it}.ion{1}.temperature;
   ids_core_profiles.profiles_1d{it}.n_i_thermal_total = ids_core_profiles.profiles_1d{it}.ion{1}.density_thermal;
@@ -297,6 +298,7 @@ for it=1:length(ids_core_profiles.time)
   ids_core_profiles.profiles_1d{it}.ion{2}.density_thermal = ids_core_profiles.profiles_1d{it}.ion{2}.density;
   ids_core_profiles.profiles_1d{it}.ion{2}.pressure_thermal = 1.6022e-19.*ids_core_profiles.profiles_1d{it}.ion{2}.density_thermal ...
       .* ids_core_profiles.profiles_1d{it}.ion{2}.temperature;
+  ids_core_profiles.profiles_1d{it}.ion{2}.z_ion = 6.;
   % average/sums
   ids_core_profiles.profiles_1d{it}.t_i_average = ids_core_profiles.profiles_1d{it}.ion{1}.temperature;
   ids_core_profiles.profiles_1d{it}.n_i_thermal_total = ids_core_profiles.profiles_1d{it}.ion{1}.density_thermal + ...