diff --git a/bin/v-add-web-domain-ssl b/bin/v-add-web-domain-ssl
index d7a209f1..43e5cce3 100755
--- a/bin/v-add-web-domain-ssl
+++ b/bin/v-add-web-domain-ssl
@@ -121,14 +121,14 @@ $BIN/v-restart-proxy $restart
 check_result $? "Proxy restart failed" >/dev/null
 
 # Updating system ssl dependencies
-if [ -z "$VESTA_CERTIFICATE" ]; then
+if [ ! -z "$VESTA_CERTIFICATE" ]; then
     crt_user=$(echo "$VESTA_CERTIFICATE" |cut -f 1 -d :)
     crt_domain=$(echo "$VESTA_CERTIFICATE" |cut -f 2 -d :)
     if [ "$user" = "$crt_user" ] && [ "$domain" = "$crt_domain" ]; then
         $BIN/v-add-sys-vesta-ssl $user $domain >/dev/null 2>&1
     fi
 fi
-if [ -z "$MAIL_CERTIFICATE" ]; then
+if [ ! -z "$MAIL_CERTIFICATE" ]; then
     crt_user=$(echo "$MAIL_CERTIFICATE" |cut -f 1 -d :)
     crt_domain=$(echo "$MAIL_CERTIFICATE" |cut -f 2 -d :)
     if [ "$user" = "$crt_user" ] && [ "$domain" = "$crt_domain" ]; then