diff --git a/cd.sh b/cd.sh
index a4cf213..e143c0d 100644
--- a/cd.sh
+++ b/cd.sh
@@ -87,33 +87,19 @@ Dir::Etc::SourceParts \"\";
     esac
 }
 
-function cd_set_https_verification_off {
-    cd_step "${FUNCNAME}"
-    case "${CD_OS_NAME}" in
-        'debian')
-            cd_write '/etc/apt/apt.conf.d/https' "\
-Acquire::https::Verify-Peer False;
-"
-        ;;
-        *) exit 1 ;;
-    esac
-}
-
-function cd_update_packages_catalog {
-    cd_step "${FUNCNAME}"
-    case "${CD_OS_NAME}" in
-        'debian') apt-get update ;;
-        *) exit 1 ;;
-    esac
-}
-
 function cd_main {
     cd_set_dns_resolving
     cd_set_packages_repositories
     cd_set_packages_configuration
-    cd_set_https_verification_off
-    cd_update_packages_catalog
 
+cd_step "disable package verification"
+echo -n "\
+Acquire::https::Verify-Peer False;
+" > '/etc/apt/apt.conf.d/https' \
+|| exit
+cd_step "update package catalog"
+apt-get update \
+|| exit
 cd_step "install CA certificates package"
 apt-get install --yes 'ca-certificates' \
 || exit