diff --git a/media/js/jquery.dataTables.js b/media/js/jquery.dataTables.js
index 1bf8c833..e458e7e1 100644
--- a/media/js/jquery.dataTables.js
+++ b/media/js/jquery.dataTables.js
@@ -4696,7 +4696,7 @@
 		 *  @returns {string} JSON string
 		 *  @memberof DataTable#oApi
 		 */
-		var _fnJsonString = (JSON.stringify) ? JSON.stringify : function( o )
+		var _fnJsonString = (window.JSON) ? JSON.stringify : function( o )
 		{
 			/* Not an object or array */
 			var sType = typeof o;
diff --git a/media/src/core/core.support.js b/media/src/core/core.support.js
index e37ad336..0aa5843f 100644
--- a/media/src/core/core.support.js
+++ b/media/src/core/core.support.js
@@ -273,7 +273,7 @@ function _fnCallbackFire( oSettings, sStore, sTrigger, aArgs )
  *  @returns {string} JSON string
  *  @memberof DataTable#oApi
  */
-var _fnJsonString = (JSON.stringify) ? JSON.stringify : function( o )
+var _fnJsonString = (window.JSON) ? JSON.stringify : function( o )
 {
 	/* Not an object or array */
 	var sType = typeof o;