diff --git a/certbotd.sh b/certbotd.sh
index 2ffac70..533847c 100755
--- a/certbotd.sh
+++ b/certbotd.sh
@@ -104,7 +104,7 @@ case $1 in
         if test -s "${cert}"; then
           domain="`certtool -i < "${cert}" | grep Subject: | cut -d = -f 2 | tr -d " "`"
 
-          if grep -q "^${subject}$" "${domains}"; then
+          if grep -q "^${domain}$" "${domains}"; then
             echo "ok - ${domain} certificate correctly set"
           else
             not_ok "${domain} certificate is not needed anymore, removing"