diff --git a/letsencrypt.sh b/letsencrypt.sh
index bad985f..a21d76f 100755
--- a/letsencrypt.sh
+++ b/letsencrypt.sh
@@ -384,7 +384,7 @@ sign_domain() {
   echo " + Creating fullchain.pem..."
   cat "${crt_path}" > "${BASEDIR}/certs/${domain}/fullchain-${timestamp}.pem"
   _request get "$(openssl x509 -in "${BASEDIR}/certs/${domain}/cert-${timestamp}.pem" -noout -text | grep 'CA Issuers - URI:' | cut -d':' -f2-)" > "${BASEDIR}/certs/${domain}/chain-${timestamp}.pem"
-  if ! grep "BEGIN CERTIFICATE" "${BASEDIR}/certs/${domain}/chain-${timestamp}.pem"; then
+  if ! grep "BEGIN CERTIFICATE" "${BASEDIR}/certs/${domain}/chain-${timestamp}.pem" > /dev/null 2>&1; then
     openssl x509 -in "${BASEDIR}/certs/${domain}/chain-${timestamp}.pem" -inform DER -out "${BASEDIR}/certs/${domain}/chain-${timestamp}.pem" -outform PEM
   fi
   ln -sf "chain-${timestamp}.pem" "${BASEDIR}/certs/${domain}/chain.pem"