diff --git a/packages/block-library/src/post-author-name/block.json b/packages/block-library/src/post-author-name/block.json
index 866e7f37dba27e..68d2c49bd91056 100644
--- a/packages/block-library/src/post-author-name/block.json
+++ b/packages/block-library/src/post-author-name/block.json
@@ -58,7 +58,13 @@
 			"radius": true,
 			"color": true,
 			"width": true,
-			"style": true
+			"style": true,
+			"__experimentalDefaultControls": {
+				"radius": true,
+				"color": true,
+				"width": true,
+				"style": true
+			}
 		}
 	},
 	"style": "wp-block-post-author-name"