diff --git a/src/core/ThemeInjector.ts b/src/core/ThemeInjector.ts
index b9dce5235..d2ffb070c 100644
--- a/src/core/ThemeInjector.ts
+++ b/src/core/ThemeInjector.ts
@@ -34,3 +34,5 @@ export class ThemeInjector extends Injector {
 		super.set(createThemeInjectorPayload(theme, variant));
 	}
 }
+
+export default ThemeInjector;
diff --git a/src/core/registerCustomElement.ts b/src/core/registerCustomElement.ts
index 11bbf2d7e..d95698906 100644
--- a/src/core/registerCustomElement.ts
+++ b/src/core/registerCustomElement.ts
@@ -10,7 +10,7 @@ import {
 } from './vdom';
 import { from } from '../shim/array';
 import global from '../shim/global';
-import Injector from './Injector';
+import ThemeInjector from './ThemeInjector';
 import { DomVNode, WNode } from './interfaces';
 
 const RESERVED_PROPS = ['focus'];
@@ -97,8 +97,8 @@ export function DomToWidgetWrapper(domNode: HTMLElement): any {
 	return wrapper;
 }
 
-function registerThemeInjector(theme: any, themeRegistry: Registry): Injector {
-	const themeInjector = new Injector(theme);
+function registerThemeInjector(theme: any, themeRegistry: Registry): ThemeInjector {
+	const themeInjector = new ThemeInjector(theme);
 	themeRegistry.defineInjector('__theme_injector', (invalidator) => {
 		themeInjector.setInvalidator(invalidator);
 		return () => themeInjector;