diff --git a/src/data/arena-tag.ts b/src/data/arena-tag.ts
index dad9d774df5..da288a437d1 100644
--- a/src/data/arena-tag.ts
+++ b/src/data/arena-tag.ts
@@ -36,7 +36,7 @@ export abstract class ArenaTag {
     public side: ArenaTagSide = ArenaTagSide.BOTH
   ) {}
 
-  apply(arena: Arena, simulated: boolean, ...args: any[]): boolean {
+  apply(arena: Arena, simulated: boolean, ...args: unknown[]): boolean {
     return true;
   }
 
diff --git a/src/field/arena.ts b/src/field/arena.ts
index e2f50641f5f..ad1846884fc 100644
--- a/src/field/arena.ts
+++ b/src/field/arena.ts
@@ -589,7 +589,7 @@ export class Arena {
     if (side !== ArenaTagSide.BOTH) {
       tags = tags.filter(t => t.side === side);
     }
-    tags.forEach(t => t.apply(this, simulated, args));
+    tags.forEach(t => t.apply(this, simulated, ...args));
   }
 
   /**