diff --git a/test/elements/test-demoelement.ts b/test/elements/test-demoelement.ts
index cc8e148..56b0564 100644
--- a/test/elements/test-demoelement.ts
+++ b/test/elements/test-demoelement.ts
@@ -20,6 +20,17 @@ enum ETestEnum {
 export class TestDemoelement extends DeesElement {
   public static demo = () => html`<test-demoelement>This is a slot text</test-demoelement>`;
 
+  @property()
+  public notTyped = 'hello';
+
+  @property({
+    type: String,
+  })
+  public typedAndNotInitizalized: string;
+
+  @property()
+  public notTypedAndNotInitizalized: string;
+
   @property({
     type: Boolean,
   })
diff --git a/ts_web/elements/wcc-properties.ts b/ts_web/elements/wcc-properties.ts
index cc4321f..a3547f8 100644
--- a/ts_web/elements/wcc-properties.ts
+++ b/ts_web/elements/wcc-properties.ts
@@ -255,6 +255,9 @@ export class WccProperties extends LitElement {
     if (this.selectedItem && (this.selectedItem as any).demo) {
       console.log(`Got Dees-Element for property evaluation.`);
       const anonItem: any = this.selectedItem;
+      if (!anonItem) {
+        return;
+      }
       console.log(anonItem.elementProperties);
       const wccFrame = await this.dashboardRef.wccFrame;
       let selectedElement: HTMLElement;