diff --git a/cd.sh b/cd.sh
index 1968ca2..5717dbd 100644
--- a/cd.sh
+++ b/cd.sh
@@ -75,7 +75,7 @@ function cd_set_environment {
     [ "${CI_SERVER_URL}" ] && CD_PROJECTS_URL="${CI_SERVER_URL}"
     [ "${GITHUB_SERVER_URL}" ] && CD_PROJECTS_URL="${GITHUB_SERVER_URL}"
     if [ "${CD_PROJECTS_URL}" ] ; then
-        CD_PROJECTS_URL+="/${CD_PROJECTS_GROUP}"
+        CD_PROJECTS_URL="${CD_PROJECTS_URL}/${CD_PROJECTS_GROUP}"
     else
         echo 'CD_PROJECTS_URL'
         exit 3
@@ -124,7 +124,7 @@ local server
 local text=''
     cd_step "${FUNCNAME}"
     for server in "${@}" ; do
-        text+="nameserver ${server}
+        text="${text}nameserver ${server}
 "
     done
     cd_write "${CD_DNS_FILE}" "${text}"