diff --git a/src/screen.js b/src/screen.js
index 0f852a1..0c5ecea 100644
--- a/src/screen.js
+++ b/src/screen.js
@@ -41,7 +41,7 @@ function Screen(dom) {
 
 	function markAsRead(yes) {
 		if(yes == undefined) {
-			yes = false;
+			yes = true;
 		}
 		getTextZone().classList[yes ? 'add' : 'remove']('read');
 	}