diff --git a/src/dda/backup/cred_rot/domain.clj b/src/dda/backup/cred_rot/domain.clj
index abe2e1b..1a1cec1 100644
--- a/src/dda/backup/cred_rot/domain.clj
+++ b/src/dda/backup/cred_rot/domain.clj
@@ -3,14 +3,19 @@
    [orchestra.core :refer [defn-spec]]
    [clojure.spec.alpha :as s]
    [clojure.string :as str]
+   [dda.backup.core.domain :as cd]
+   [dda.backup.restic.domain :as rd]
    [cljc.java-time.local-date :as ld]
    [cljc.java-time.format.date-time-formatter :as df]))
 
 (s/def ::new-password-file string?)
+(s/def ::config (s/keys :req-un [::rd/restic-repository
+                                 ::rd/password-file]
+                        :opt-un [::rd/certificate-file
+                                 ::new-password-file]))
 
 (def lowercase-numeric #"[a-z0-9]+")
 (def alphanumeric #"[a-zA-Z0-9]+")
-
 ; true | false
 (s/def ::current boolean?)
 ; 521e0760