diff --git a/src/mol-canvas3d/canvas3d.ts b/src/mol-canvas3d/canvas3d.ts
index 3a1e34838c029752882f7b6a75b1b3bd73396043..24618f9df640a0042d256e66a3357b81c8b56210 100644
--- a/src/mol-canvas3d/canvas3d.ts
+++ b/src/mol-canvas3d/canvas3d.ts
@@ -26,12 +26,12 @@ import { BoundingSphereHelper, DebugHelperParams } from './helper/bounding-spher
 import { decodeFloatRGB } from 'mol-util/float-packing';
 import { SetUtils } from 'mol-util/set';
 import { Canvas3dInteractionHelper } from './helper/interaction-events';
-import { PostprocessingParams, PostprocessingPass } from './helper/postprocessing';
-import { MultiSampleParams, MultiSamplePass } from './helper/multi-sample';
+import { PostprocessingParams, PostprocessingPass } from './passes/postprocessing';
+import { MultiSampleParams, MultiSamplePass } from './passes/multi-sample';
 import { GLRenderingContext } from 'mol-gl/webgl/compat';
 import { PixelData } from 'mol-util/image';
 import { readTexture } from 'mol-gl/compute/util';
-import { DrawPass } from './helper/draw';
+import { DrawPass } from './passes/draw';
 
 export const Canvas3DParams = {
     // TODO: FPS cap?
diff --git a/src/mol-canvas3d/helper/draw.ts b/src/mol-canvas3d/passes/draw.ts
similarity index 97%
rename from src/mol-canvas3d/helper/draw.ts
rename to src/mol-canvas3d/passes/draw.ts
index 7b39e0a05d7dc30e963b1356c5c00647dedd6cb2..746460f97a190a634db017cd44ba01afbadd88cc 100644
--- a/src/mol-canvas3d/helper/draw.ts
+++ b/src/mol-canvas3d/passes/draw.ts
@@ -8,7 +8,7 @@ import { WebGLContext } from 'mol-gl/webgl/context';
 import { createRenderTarget, RenderTarget } from 'mol-gl/webgl/render-target';
 import Renderer from 'mol-gl/renderer';
 import Scene from 'mol-gl/scene';
-import { BoundingSphereHelper } from './bounding-sphere-helper';
+import { BoundingSphereHelper } from '../helper/bounding-sphere-helper';
 import { createTexture, Texture } from 'mol-gl/webgl/texture';
 
 
diff --git a/src/mol-canvas3d/helper/multi-sample.ts b/src/mol-canvas3d/passes/multi-sample.ts
similarity index 100%
rename from src/mol-canvas3d/helper/multi-sample.ts
rename to src/mol-canvas3d/passes/multi-sample.ts
diff --git a/src/mol-canvas3d/helper/postprocessing.ts b/src/mol-canvas3d/passes/postprocessing.ts
similarity index 100%
rename from src/mol-canvas3d/helper/postprocessing.ts
rename to src/mol-canvas3d/passes/postprocessing.ts