diff --git a/src/js/plyr.js b/src/js/plyr.js
index 84a01225..04ac00cb 100644
--- a/src/js/plyr.js
+++ b/src/js/plyr.js
@@ -1666,7 +1666,7 @@
             // If a single source is passed
             // .source("path/to/video.mp4")
             if (typeof sources === "string") {
-                player.media.setAttribute("src", sources);
+                _addSource({ src: sources });
             }
 
             // An array of source objects