diff --git a/src/renderer/webgl/GlyphRenderer.ts b/src/renderer/webgl/GlyphRenderer.ts
index e76b2f7b..f95b7530 100644
--- a/src/renderer/webgl/GlyphRenderer.ts
+++ b/src/renderer/webgl/GlyphRenderer.ts
@@ -4,7 +4,7 @@
  */
 
 import { createProgram, PROJECTION_MATRIX } from './WebglUtils';
-import WebglCharAtlas from './atlas/WebglCharAtlas';
+import { WebglCharAtlas } from './atlas/WebglCharAtlas';
 import { IWebGL2RenderingContext, IWebGLVertexArrayObject, IRenderModel, IRasterizedGlyph } from './Types';
 import { INDICIES_PER_CELL } from './WebglRenderer';
 import { COMBINED_CHAR_BIT_MASK } from './RenderModel';
diff --git a/src/renderer/webgl/WebglRenderer.ts b/src/renderer/webgl/WebglRenderer.ts
index a01098df..c4d2c27e 100644
--- a/src/renderer/webgl/WebglRenderer.ts
+++ b/src/renderer/webgl/WebglRenderer.ts
@@ -8,7 +8,7 @@ import { GlyphRenderer } from './GlyphRenderer';
 import { LinkRenderLayer } from './renderLayer/LinkRenderLayer';
 import { CursorRenderLayer } from './renderLayer/CursorRenderLayer';
 import { acquireCharAtlas } from './atlas/CharAtlasCache';
-import WebglCharAtlas from './atlas/WebglCharAtlas';
+import { WebglCharAtlas } from './atlas/WebglCharAtlas';
 import { RectangleRenderer } from './RectangleRenderer';
 import { IWebGL2RenderingContext } from './Types';
 import { INVERTED_DEFAULT_COLOR } from './atlas/Types';
diff --git a/src/renderer/webgl/atlas/BaseCharAtlas.ts b/src/renderer/webgl/atlas/BaseCharAtlas.ts
index ee69b381..470736f1 100644
--- a/src/renderer/webgl/atlas/BaseCharAtlas.ts
+++ b/src/renderer/webgl/atlas/BaseCharAtlas.ts
@@ -6,7 +6,7 @@
 import { IGlyphIdentifier } from './Types';
 import { IDisposable } from 'xterm';
 
-export default abstract class BaseCharAtlas implements IDisposable {
+export abstract class BaseCharAtlas implements IDisposable {
   private _didWarmUp: boolean = false;
 
   public dispose(): void { }
diff --git a/src/renderer/webgl/atlas/CharAtlasCache.ts b/src/renderer/webgl/atlas/CharAtlasCache.ts
index bd5b8201..647b96b4 100644
--- a/src/renderer/webgl/atlas/CharAtlasCache.ts
+++ b/src/renderer/webgl/atlas/CharAtlasCache.ts
@@ -4,8 +4,8 @@
  */
 
 import { generateConfig, configEquals } from './CharAtlasUtils';
-import BaseCharAtlas from './BaseCharAtlas';
-import WebglCharAtlas from './WebglCharAtlas';
+import { BaseCharAtlas } from './BaseCharAtlas';
+import { WebglCharAtlas } from './WebglCharAtlas';
 import { ICharAtlasConfig } from './Types';
 import { Terminal } from 'xterm';
 import { IColorSet } from 'browser/Types';
diff --git a/src/renderer/webgl/atlas/WebglCharAtlas.ts b/src/renderer/webgl/atlas/WebglCharAtlas.ts
index af5d2122..f7624285 100644
--- a/src/renderer/webgl/atlas/WebglCharAtlas.ts
+++ b/src/renderer/webgl/atlas/WebglCharAtlas.ts
@@ -4,7 +4,7 @@
  */
 
 import { DIM_OPACITY, IGlyphIdentifier, INVERTED_DEFAULT_COLOR, ICharAtlasConfig } from './Types';
-import BaseCharAtlas from './BaseCharAtlas';
+import { BaseCharAtlas } from './BaseCharAtlas';
 import { IRasterizedGlyph, IBoundingBox, IRasterizedGlyphSet } from '../Types';
 import { FLAGS, DEFAULT_COLOR } from '../../../common/buffer/Constants';
 import { is256Color } from './CharAtlasUtils';
@@ -41,7 +41,7 @@ const NULL_RASTERIZED_GLYPH: IRasterizedGlyph = {
 
 const TMP_CANVAS_GLYPH_PADDING = 2;
 
-export default class WebglCharAtlas extends BaseCharAtlas {
+export class WebglCharAtlas extends BaseCharAtlas {
   private _cacheMap: { [code: number]: IRasterizedGlyphSet } = {};
   private _cacheMapCombined: { [chars: string]: IRasterizedGlyphSet } = {};
 
diff --git a/src/renderer/webgl/renderLayer/BaseRenderLayer.ts b/src/renderer/webgl/renderLayer/BaseRenderLayer.ts
index 1b880c12..b88d7330 100644
--- a/src/renderer/webgl/renderLayer/BaseRenderLayer.ts
+++ b/src/renderer/webgl/renderLayer/BaseRenderLayer.ts
@@ -7,7 +7,7 @@ import { IRenderLayer } from './Types';
 import { ICellData } from '../../../common/Types';
 import { DEFAULT_COLOR } from '../../../common/buffer/Constants';
 import { DIM_OPACITY, INVERTED_DEFAULT_COLOR, IGlyphIdentifier } from '../atlas/Types';
-import BaseCharAtlas from '../atlas/BaseCharAtlas';
+import { BaseCharAtlas } from '../atlas/BaseCharAtlas';
 import { acquireCharAtlas } from '../atlas/CharAtlasCache';
 import { CellData, AttributeData, WHITESPACE_CELL_CHAR, WHITESPACE_CELL_CODE } from '../../../common/buffer/BufferLine';
 import { Terminal } from 'xterm';