diff --git a/acme.sh b/acme.sh
index 472975a..2d24551 100755
--- a/acme.sh
+++ b/acme.sh
@@ -5510,7 +5510,7 @@ _process() {
         HTTPS_INSECURE="1"
         ;;
       --ca-bundle)
-        _ca_bundle="$(_readlink -f "$2")"
+        _ca_bundle="$(_readlink "$2")"
         CA_BUNDLE="$_ca_bundle"
         shift
         ;;