diff --git a/adminer/include/connect.inc.php b/adminer/include/connect.inc.php
index 4e91a6ba..45ba46d2 100644
--- a/adminer/include/connect.inc.php
+++ b/adminer/include/connect.inc.php
@@ -36,7 +36,7 @@ function connect_error() {
 				. "<th>" . lang('Database') . " - <a href='" . h(ME) . "refresh=1'>" . lang('Refresh') . "</a>"
 				. "<td>" . lang('Collation')
 				. "<td>" . lang('Tables')
-				. "<td>" . lang('Size') . " - <a href='" . h(ME) . "dbsize=1' onclick=\"return !ajaxSetHtml('" . h(js_escape(ME)) . "script=connect');\">" . lang('Compute') . "</a>"
+				. "<td>" . lang('Size') . " - <a href='" . h(ME) . "dbsize=1' onclick=\"return ajaxSetHtml('" . h(js_escape(ME)) . "script=connect');\">" . lang('Compute') . "</a>"
 				. "</thead>\n"
 			;
 			
diff --git a/adminer/static/functions.js b/adminer/static/functions.js
index 4aec4341..d1e97671 100644
--- a/adminer/static/functions.js
+++ b/adminer/static/functions.js
@@ -603,10 +603,10 @@ function ajax(url, callback, data, message) {
 
 /** Use setHtml(key, value) for JSON response
 * @param string
-* @return XMLHttpRequest or false in case of an error
+* @return boolean false for success
 */
 function ajaxSetHtml(url) {
-	return ajax(url, function (request) {
+	return !ajax(url, function (request) {
 		var data = window.JSON ? JSON.parse(request.responseText) : eval('(' + request.responseText + ')');
 		for (var key in data) {
 			setHtml(key, data[key]);