diff --git a/CHANGELOG.md b/CHANGELOG.md
index 445ceb9..cae8d94 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,6 +20,8 @@ The **patch** part changes is incremented if multiple releases happen the same m
 
 ### Fixed
 
+* letsencrypt: Add required check when retrieving certificate. (Avoid TypeError.)
+
 ### Removed
 
 ### Security
diff --git a/lib/letsencrypt.php b/lib/letsencrypt.php
index 8c0d2d4..3cf9dbf 100644
--- a/lib/letsencrypt.php
+++ b/lib/letsencrypt.php
@@ -157,6 +157,9 @@ class LetsEncrypt
     {
         $stream = stream_context_create(array("ssl" => array("capture_peer_cert" => true)));
         $read = stream_socket_client("ssl://" . $domain . ":443", $errno, $errstr, 10, STREAM_CLIENT_CONNECT, $stream);
+        if ($read === false) {
+            return false;
+        }
         $cont = stream_context_get_params($read);
         
         return $cont;
diff --git a/scripts/web-add.sh b/scripts/web-add.sh
index 224b2b1..5ec23ba 100755
--- a/scripts/web-add.sh
+++ b/scripts/web-add.sh
@@ -766,7 +766,7 @@ op_del() {
 
     # Deactivate web vhost (apache or nginx)
     if [ "$WEB_SERVER" == "apache" ]; then
-        if a2query -s test12 >/dev/null 2&>1; then
+        if a2query -s "${login}" >/dev/null 2&>1; then
             a2dissite "${login}.conf"
         fi
         rm -f /etc/apache2/sites-available/"$login.conf"