diff --git a/en/modifier-type.json b/en/modifier-type.json
index 4fb34b09..b85a75f5 100644
--- a/en/modifier-type.json
+++ b/en/modifier-type.json
@@ -240,6 +240,8 @@
     "TOXIC_ORB": { "name": "Toxic Orb", "description": "It's a bizarre orb that exudes toxins when touched and will badly poison the holder during battle." },
     "FLAME_ORB": { "name": "Flame Orb", "description": "It's a bizarre orb that gives off heat when touched and will affect the holder with a burn during battle." },
 
+    "DOMAIN_EXPANDER": { "name": "Domain Expander", "description": "Extends the duration of terrain and weather from moves or Abilities by 2 turns per stack." },
+
     "EVOLUTION_TRACKER_GIMMIGHOUL": { "name": "Treasures", "description": "This Pokémon loves treasure! Keep collecting treasure and something might happen!"},
 
     "BATON": { "name": "Baton", "description": "Allows passing along effects when switching Pokémon, which also bypasses traps." },