diff --git a/calc/src/mechanics/util.ts b/calc/src/mechanics/util.ts
index 23d3e00fd..4a873868c 100644
--- a/calc/src/mechanics/util.ts
+++ b/calc/src/mechanics/util.ts
@@ -28,7 +28,7 @@ const EV_ITEMS = [
 ];
 
 export function isGrounded(pokemon: Pokemon, field: Field) {
-  return (field.isGravity ||
+  return (field.isGravity || pokemon.hasItem('Iron Ball') ||
     (!pokemon.hasType('Flying') &&
       !pokemon.hasAbility('Levitate') &&
       !pokemon.hasItem('Air Balloon')));