diff --git a/_posts/2023-12-21-reactive-custom-elements-with-html-dataset.md b/_posts/2023-12-21-reactive-custom-elements-with-html-dataset.md
index a152f39..67719d2 100644
--- a/_posts/2023-12-21-reactive-custom-elements-with-html-dataset.md
+++ b/_posts/2023-12-21-reactive-custom-elements-with-html-dataset.md
@@ -39,7 +39,7 @@ Let's consider the following code example (also [in CodePen →](https://code
 class Counter extends HTMLElement {
   static observedAttributes = ["data-count"];
   connectedCallback() {
-    this.dataset.count = 0;
+    this.dataset.count = this.dataset.count ?? 0;
     this.onclick = () => ++this.dataset.count;
   }
   attributeChangedCallback(prop, oldValue, newValue) {