diff --git a/api/js/jsapi/egw_json.js b/api/js/jsapi/egw_json.js
index 9e8a882dec..0f3198c0ec 100644
--- a/api/js/jsapi/egw_json.js
+++ b/api/js/jsapi/egw_json.js
@@ -130,6 +130,7 @@ egw.extend('json', egw.MODULE_WND_LOCAL, function(_app, _wnd)
 			dataType: 'json',
 			type: method,
 			success: this.handleResponse,
+			jsonp: false,
 			error: error || this.handleError
 		});