diff --git a/erepublik/citizen.py b/erepublik/citizen.py
index 8910b8a..978b6a7 100644
--- a/erepublik/citizen.py
+++ b/erepublik/citizen.py
@@ -312,7 +312,7 @@ class BaseCitizen(access_points.CitizenAPI):
 
                 if item_data.get('type'):
                     #  in ['damageBoosters', "aircraftDamageBoosters", 'prestigePointsBoosters']
-                    if item_data.get('type').endswith('Boosters'):
+                    if item_data.get('isBooster'):
                         is_booster = True
                         kind = item_data['type']