diff --git a/utilities.py b/utilities.py
index 7145430649978020832bc302779390be7241ca78..82f0b4c19da04dd4159f3c997b7641b23b83e525 100755
--- a/utilities.py
+++ b/utilities.py
@@ -166,7 +166,7 @@ def get_unique_species_dict_list(sp_dict_list):
 
     for sp in sp_dict_list:
         for gspecies in unique_species_genus_species:
-            if gspecies not in unique_species_dict.keys() or sp[0]["description"]["main_sp"] == "yes" :
+            if gspecies not in unique_species_dict.keys() or sp["description"]["main_sp"] == "yes" :
                 unique_species_dict[gspecies] = sp
             else:
                 continue