diff --git a/adev/src/content/guide/signals/linked-signal.md b/adev/src/content/guide/signals/linked-signal.md
index 0f721ec8041..d1ab6f18b05 100644
--- a/adev/src/content/guide/signals/linked-signal.md
+++ b/adev/src/content/guide/signals/linked-signal.md
@@ -63,13 +63,13 @@ In the example above, `selectedOption` always updates back to the first option w
 export class ShippingMethodPicker {
   shippingOptions: Signal<ShippingMethod[]> = getShippingOptions();
   
-  selectedOption = linkedSignal({
+  selectedOption = linkedSignal<ShippingMethod[], ShippingMethod>({
     // `selectedOption` is set to the `computation` result whenever this `source` changes.
-    source: shippingOptions,
+    source: this.shippingOptions,
     computation: (newOptions, previous) => {
       // If the newOptions contain the previously selected option, preserve that selection.
       // Otherwise, default to the first option.
-      return newOptions.find(opt => opt.id === previous?.value) ?? newOptions[0];
+      return newOptions.find(opt => opt.id === previous?.value?.id) ?? newOptions[0];
     } 
   });