diff --git a/cd.sh b/cd.sh
index 8823326..eaba5d2 100644
--- a/cd.sh
+++ b/cd.sh
@@ -454,14 +454,13 @@ cd_set_https_verification_off () {
 }
 
 cd_set_dns_resolving () {
-local server
-local text=""
     cd_step "Set DNS resolving"
-    for server in ${CD_DNS} ; do
-        text="${text}nameserver ${server}
+    for cd_set_dns_resolving__server in ${CD_DNS} ; do
+        cd_set_dns_resolving__text="${cd_set_dns_resolving__text}\
+nameserver ${cd_set_dns_resolving__server}
 "
     done
-    cd_write "${CD_DNS_FILE}" "${text}"
+    cd_write "${CD_DNS_FILE}" "${cd_set_dns_resolving__text}"
 }
 
 cd_update_packages_catalog () {