diff --git a/src/cdk-experimental/accordion/accordion.ts b/src/cdk-experimental/accordion/accordion.ts
index 6509e73e72b9..15bcea4a0f4f 100644
--- a/src/cdk-experimental/accordion/accordion.ts
+++ b/src/cdk-experimental/accordion/accordion.ts
@@ -93,7 +93,6 @@ export class CdkAccordionPanel {
     '[attr.aria-expanded]': 'pattern.expanded()',
     '[attr.aria-controls]': 'pattern.controls()',
     '[attr.aria-disabled]': 'pattern.disabled()',
-    '[attr.inert]': 'hardDisabled() ? true : null',
     '[attr.disabled]': 'hardDisabled() ? true : null',
     '[attr.tabindex]': 'pattern.tabindex()',
     '(keydown)': 'pattern.onKeydown($event)',