diff --git a/src/components/AvatarStack/AvatarStackMoreButton.tsx b/src/components/AvatarStack/AvatarStackMoreButton.tsx
index 4a6204dcc5..21b12c5399 100644
--- a/src/components/AvatarStack/AvatarStackMoreButton.tsx
+++ b/src/components/AvatarStack/AvatarStackMoreButton.tsx
@@ -21,7 +21,7 @@ export const AvatarStackMoreButton = React.forwardRef<
     AvatarStackMoreButtonProps
 >(({className, size = DEFAULT_AVATAR_SIZE, onClick, count, 'aria-label': ariaLabel}, ref) => {
     return (
-        <button ref={ref} className={b('more-button', {size}, className)} onClick={onClick}>
+        <button ref={ref} type="button" className={b('more-button', {size}, className)} onClick={onClick}>
             <Avatar
                 text={`+${count}`}
                 size={size}