diff --git a/scripts/zm/replaced/_zm_weapons.gsc b/scripts/zm/replaced/_zm_weapons.gsc
index 6b91dc21..c016e139 100644
--- a/scripts/zm/replaced/_zm_weapons.gsc
+++ b/scripts/zm/replaced/_zm_weapons.gsc
@@ -163,6 +163,7 @@ lethal_grenade_update_prompt( player )
 {
 	weapon = self.stub.zombie_weapon_upgrade;
 	hint = level.zombie_weapons[weapon].hint;
+	cost = level.zombie_weapons[weapon].cost;
 	self.stub.hint_string = hint;
 	self sethintstring( self.stub.hint_string, cost );
 	self.stub.cursor_hint = "HINT_WEAPON";