diff --git a/js/buoyancy/model/BuoyancyIntroModel.ts b/js/buoyancy/model/BuoyancyIntroModel.ts
index a910791f..7df58b14 100644
--- a/js/buoyancy/model/BuoyancyIntroModel.ts
+++ b/js/buoyancy/model/BuoyancyIntroModel.ts
@@ -9,8 +9,6 @@
 import Matrix3 from '../../../../dot/js/Matrix3.js';
 import StrictOmit from '../../../../phet-core/js/types/StrictOmit.js';
 import Vector2 from '../../../../dot/js/Vector2.js';
-import Enumeration from '../../../../phet-core/js/Enumeration.js';
-import EnumerationValue from '../../../../phet-core/js/EnumerationValue.js';
 import optionize, { EmptySelfOptions } from '../../../../phet-core/js/optionize.js';
 import BlockSetModel, { BlockSetModelOptions } from '../../common/model/BlockSetModel.js';
 import Cube from '../../common/model/Cube.js';