diff --git a/tt-rss.js b/tt-rss.js
index 283412623..85c4564df 100644
--- a/tt-rss.js
+++ b/tt-rss.js
@@ -111,8 +111,6 @@ function backend_sanity_check_callback() {
 	if (xmlhttp.readyState == 4) {
 
 		try {
-
-			alert(xmlhttp.responseText);
 		
 			if (!xmlhttp.responseXML) {
 				fatalError(3);