diff --git a/js/reveal.js b/js/reveal.js
index 3bd292a..ecba3a9 100644
--- a/js/reveal.js
+++ b/js/reveal.js
@@ -2723,7 +2723,7 @@
 		slide.style.display = 'block';
 
 		// Media elements with data-src attributes
-		toArray( slide.querySelectorAll( 'img[data-src]', 'video[data-src]', 'audio[data-src]' ) ).forEach( function( element ) {
+		toArray( slide.querySelectorAll( 'img[data-src], video[data-src], audio[data-src]' ) ).forEach( function( element ) {
 			element.setAttribute( 'src', element.getAttribute( 'data-src' ) );
 			element.removeAttribute( 'data-src' );
 		} );
diff --git a/test/test.html b/test/test.html
index 93de5b1..34cf832 100644
--- a/test/test.html
+++ b/test/test.html
@@ -22,6 +22,8 @@
 				<section data-background-image="examples/assets/image1.png">
 					<h1>1</h1>
 					<img data-src="fake-url.png">
+					<video data-src="fake-url.mp4"></video>
+					<audio data-src="fake-url.mp3"></audio>
 				</section>
 
 				<section>
diff --git a/test/test.js b/test/test.js
index ff32ee8..79ff81e 100644
--- a/test/test.js
+++ b/test/test.js
@@ -495,6 +495,14 @@ Reveal.addEventListener( 'ready', function() {
 		strictEqual( document.querySelectorAll( '.reveal section img[src]' ).length, 1, 'Image source has been set' );
 	});
 
+	test( 'video with data-src', function() {
+		strictEqual( document.querySelectorAll( '.reveal section video[src]' ).length, 1, 'Video source has been set' );
+	});
+
+	test( 'audio with data-src', function() {
+		strictEqual( document.querySelectorAll( '.reveal section audio[src]' ).length, 1, 'Audio source has been set' );
+	});
+
 	test( 'iframe with data-src', function() {
 		Reveal.slide( 0, 0 );
 		strictEqual( document.querySelectorAll( '.reveal section iframe[src]' ).length, 0, 'Iframe source is not set' );