diff --git a/cd.sh b/cd.sh
index 93ca732..ec8ef3c 100644
--- a/cd.sh
+++ b/cd.sh
@@ -65,6 +65,7 @@ cd_set_environment_variables () {
                 *) cd_error_os "CD_OS_VERSION" ;;
             esac
             CD_CA_ROOT="/etc/pki/ca-trust/source/anchors"
+            CD_CMD_CA="update-ca-trust"
             CD_CMD_CLEAN="dnf clean all"
             CD_CMD_UPGRADE="dnf upgrade --assumeyes"
             CD_FILE_HTTPS="/etc/dnf/dnf.conf.d/https.conf"
@@ -80,6 +81,7 @@ cd_set_environment_variables () {
                 *) cd_error_os "CD_OS_VERSION" ;;
             esac
             CD_CA_ROOT="/usr/local/share/ca-certificates"
+            CD_CMD_CA="update-ca-certificates"
             CD_CMD_CLEAN="apt-get clean"
             CD_CMD_UPGRADE="apt-get upgrade --assume-yes"
             CD_FILE_HTTPS="/etc/apt/apt.conf.d/https"
@@ -217,6 +219,8 @@ cd_install_packages_tools () {
     esac
 }
 
+# agnostic steps
+
 cd_install_ca_certificates () {
     cd_step "Install CA"
     cd_install_package "${CD_CA_PACKAGE}"
@@ -225,7 +229,7 @@ cd_install_ca_certificates () {
 cd_write_ca_certificates () {
 local index
 local text
-    cd_step "Copy CA"
+    cd_step "Write CA certificates"
     cd_mkdir "${CD_CA_ROOT}"
     index=1
     eval "text=\"\${CD_CA_${index}}\""
@@ -237,15 +241,10 @@ local text
 }
 
 cd_update_ca_certificates () {
-    cd_step "Update CA"
-    case "${CD_OS_ID}" in
-        "${CD_OS_ALMA}") update-ca-trust || exit ;;
-        "${CD_OS_DEBIAN}") update-ca-certificates || exit ;;
-    esac
+    cd_step "Update CA certificates"
+    ${CD_CMD_CA} || exit
 }
 
-# agnostic steps
-
 cd_set_https_verification_on () {
     if [ "${CD_CA}" -o "${CD_OS_ID}" = "${CD_OS_DEBIAN}" ] ; then
         cd_step "Set HTTPS verification on"