diff --git a/game/data/weapons.py b/game/data/weapons.py
index 5d0b0dd1..6f2889ec 100644
--- a/game/data/weapons.py
+++ b/game/data/weapons.py
@@ -181,6 +181,8 @@ class WeaponGroup:
 
     @classmethod
     def load_all(cls) -> None:
+        if cls._loaded:
+            return
         seen_clsids: set[str] = set()
         for group in cls._each_weapon_group():
             cls.register(group)