diff --git a/packages/web-components/src/globals/mixins/throttled-input.ts b/packages/web-components/src/globals/mixins/throttled-input.ts
index e0b7ed57cf4..364fdb72aaf 100644
--- a/packages/web-components/src/globals/mixins/throttled-input.ts
+++ b/packages/web-components/src/globals/mixins/throttled-input.ts
@@ -72,7 +72,7 @@ const ThrottledInputMixin = <T extends Constructor<HTMLElement>>(Base: T) => {
     /**
      * The throttle timeout to run query upon user input.
      */
-    inputTimeout = 200;
+    abstract inputTimeout: number;
 
     connectedCallback() {
       // TS seems to miss `HTMLElement.prototype.connectedCallback()` definition