diff --git a/ts/dees-element.classes.cssmanager.ts b/ts/dees-element.classes.cssmanager.ts
index cf0f0cf..6118e15 100644
--- a/ts/dees-element.classes.cssmanager.ts
+++ b/ts/dees-element.classes.cssmanager.ts
@@ -17,7 +17,7 @@ export class CssManager {
     this.domtoolsPromise.then(async (domtoolsArg) => {
       domtoolsArg.themeManager.themeObservable.subscribe(async (goBrightArg) => {
         this.goBright = goBrightArg;
-        await domtoolsArg.domReady;
+        await domtoolsArg.domReady.promise;
         for (const bdTripletArg of this.bdVarTripletStore) {
           document.body.style.setProperty(
             bdTripletArg.cssVarName,