diff --git a/jspdf.plugin.addimage.js b/jspdf.plugin.addimage.js
index f8d3911d6..2a1dcbfcd 100644
--- a/jspdf.plugin.addimage.js
+++ b/jspdf.plugin.addimage.js
@@ -305,7 +305,7 @@
 	 * Check to see if ArrayBuffer is supported
 	 */
 	jsPDFAPI.supportsArrayBuffer = function() {
-		return typeof ArrayBuffer === 'function' && typeof Uint8Array !== 'undefined';
+		return typeof ArrayBuffer !== 'undefined' && typeof Uint8Array !== 'undefined';
 	};
 
 	/**