diff --git a/data/json/items/ammo_types.json b/data/json/items/ammo_types.json
index 784330d4964a7..eb3620ad13cc1 100644
--- a/data/json/items/ammo_types.json
+++ b/data/json/items/ammo_types.json
@@ -374,7 +374,7 @@
   {
     "type": "ammunition_type",
     "id": "battery",
-    "name": "J",
+    "name": "kJ",
     "default": "battery"
   },
   {