diff --git a/packages/block-library/src/media-text/deprecated.js b/packages/block-library/src/media-text/deprecated.js
index cd06840df83df6..759fbaabef7c20 100644
--- a/packages/block-library/src/media-text/deprecated.js
+++ b/packages/block-library/src/media-text/deprecated.js
@@ -62,7 +62,7 @@ const baseAttributes = {
 	},
 	isStackedOnMobile: {
 		type: 'boolean',
-		default: false,
+		default: true,
 	},
 };