diff --git a/src/util/base-input.ts b/src/util/base-input.ts
index 7e2e60801f..0aeefbc4fd 100644
--- a/src/util/base-input.ts
+++ b/src/util/base-input.ts
@@ -113,7 +113,7 @@ export class BaseInput<T> extends Ion implements CommonInput<T> {
    * @hidden
    */
   setDisabledState(isDisabled: boolean) {
-    this._disabled = isTrueProperty(isDisabled);
+    this._disabled = isDisabled = isTrueProperty(isDisabled);
     this._item && this._item.setElementClass(`item-${this._componentName}-disabled`, isDisabled);
   }