diff --git a/core/src/components/segment-button/segment-button.tsx b/core/src/components/segment-button/segment-button.tsx
index fd5ddcaceb..ce9e888e07 100644
--- a/core/src/components/segment-button/segment-button.tsx
+++ b/core/src/components/segment-button/segment-button.tsx
@@ -101,7 +101,7 @@ export class SegmentButton implements ComponentInterface, ButtonInterface {
       >
         <button
           type={type}
-          aria-pressed={checked ? 'true' : null}
+          aria-pressed={checked ? 'true' : 'false'}
           class="button-native"
           disabled={disabled}
         >