diff --git a/adminer/include/bootstrap.inc.php b/adminer/include/bootstrap.inc.php
index 2fa3bcf1..ec4d19d0 100644
--- a/adminer/include/bootstrap.inc.php
+++ b/adminer/include/bootstrap.inc.php
@@ -46,7 +46,7 @@ if (!isset($_SERVER["REQUEST_URI"])) {
 session_write_close(); // disable session.auto_start
 @ini_set("session.use_trans_sid", false); // protect links in export, @ - may be disabled
 session_name("adminer_sid"); // use specific session name to get own namespace
-$params = array(0, preg_replace('~\\?.*~', '', $_SERVER["REQUEST_URI"]), "", $_SERVER["HTTPS"] && $_SERVER["HTTPS"] != "off");
+$params = array(0, preg_replace('~\\?.*~', '', $_SERVER["REQUEST_URI"]), "", $_SERVER["HTTPS"] && strcasecmp($_SERVER["HTTPS"], "off"));
 if (version_compare(PHP_VERSION, '5.2.0') >= 0) {
 	$params[] = true; // HttpOnly
 }
diff --git a/adminer/include/functions.inc.php b/adminer/include/functions.inc.php
index c1424cba..4bd87605 100644
--- a/adminer/include/functions.inc.php
+++ b/adminer/include/functions.inc.php
@@ -201,7 +201,7 @@ function where_link($i, $column, $value) {
 * @return bool
 */
 function cookie($name, $value) {
-	$params = array($name, $value, time() + 2592000, preg_replace('~\\?.*~', '', $_SERVER["REQUEST_URI"]), "", $_SERVER["HTTPS"] && $_SERVER["HTTPS"] != "off"); // 2592000 = 30 * 24 * 60 * 60
+	$params = array($name, $value, time() + 2592000, preg_replace('~\\?.*~', '', $_SERVER["REQUEST_URI"]), "", $_SERVER["HTTPS"] && strcasecmp($_SERVER["HTTPS"], "off")); // 2592000 = 30 * 24 * 60 * 60
 	if (version_compare(PHP_VERSION, '5.2.0') >= 0) {
 		$params[] = true; // HttpOnly
 	}