diff --git a/pyZUnivers/achievements.py b/pyZUnivers/achievements.py
index 16e8a59..8958c5b 100644
--- a/pyZUnivers/achievements.py
+++ b/pyZUnivers/achievements.py
@@ -54,7 +54,7 @@ def get_yearly(self, year: int) -> bool|int:
         achievement = [x for x in category if x["achievement"]["id"] == YEARLY_ACHIEVEMENT_IDS[year-1]][0]
 
         # achievement unlocked
-        progress = achievement['progress']
+        progress = achievement['progress'] if 'progress' in achievement else None
         if not progress: return False
 
         # achievement locked