diff --git a/src/iiiftilesource.js b/src/iiiftilesource.js
index 921ccd12..5b47b266 100644
--- a/src/iiiftilesource.js
+++ b/src/iiiftilesource.js
@@ -51,7 +51,7 @@ $.IIIFTileSource = function( options ){
 
     $.extend( true, this, options );
 
-    if ( !( this.height && this.width && this['@id'] ) ) {
+    if ( !( this.height && this.width && (this['@id'] || this['id']) ) ) {
         throw new Error( 'IIIF required parameters not provided.' );
     }