diff --git a/resources/mmv/mmv.bootstrap.js b/resources/mmv/mmv.bootstrap.js
index 57589eb70..64c45f51b 100644
--- a/resources/mmv/mmv.bootstrap.js
+++ b/resources/mmv/mmv.bootstrap.js
@@ -486,6 +486,7 @@
 		if ( this.viewer === undefined ) {
 			this.viewer = new mw.mmv.MultimediaViewer( mw.config );
 			this.viewer.setupEventHandlers();
+			mw.mmv.viewer = this.viewer;
 		}
 
 		return this.viewer;