diff --git a/backend/src/app/rpc/mutations/ldap.clj b/backend/src/app/rpc/mutations/ldap.clj
index d327589d8..d982a30b0 100644
--- a/backend/src/app/rpc/mutations/ldap.clj
+++ b/backend/src/app/rpc/mutations/ldap.clj
@@ -13,11 +13,20 @@
    [app.loggers.audit :as audit]
    [app.rpc.mutations.profile :as profile-m]
    [app.rpc.queries.profile :as profile-q]
+   [app.util.logging :as l]
    [app.util.services :as sv]
    [clj-ldap.client :as ldap]
    [clojure.spec.alpha :as s]
    [clojure.string]))
 
+
+(s/def ::fullname ::us/not-empty-string)
+(s/def ::email ::us/email)
+(s/def ::backend ::us/not-empty-string)
+
+(s/def ::info-data
+  (s/keys :req-un [::fullname ::email ::backend]))
+
 (defn ^java.lang.AutoCloseable connect
   []
   (let [params {:ssl?      (cfg/get :ldap-ssl)
@@ -57,6 +66,13 @@
         (ex/raise :type :validation
                   :code :wrong-credentials))
 
+      (when-not (s/valid? ::info-data info)
+        (let [explain (s/explain-str ::info-data info)]
+          (l/warn ::l/raw (str "invalid response from ldap, looks like ldap is not configured correctly\n" explain))
+          (ex/raise :type :restriction
+                    :code :wrong-ldap-response
+                    :reason explain)))
+
       (let [profile (login-or-register cfg {:email (:email info)
                                             :backend (:backend info)
                                             :fullname (:fullname info)})]
@@ -94,7 +110,9 @@
                  (cfg/get :ldap-attrs-fullname)]
 
         base-dn (cfg/get :ldap-base-dn)
-        params  {:filter query :sizelimit 1 :attributes attrs}]
+        params  {:filter query
+                 :sizelimit 1
+                 :attributes attrs}]
     (first (ldap/search cpool base-dn params))))
 
 (defn- authenticate
diff --git a/docker/devenv/docker-compose.yaml b/docker/devenv/docker-compose.yaml
index b34f56b1c..c15bd7d00 100644
--- a/docker/devenv/docker-compose.yaml
+++ b/docker/devenv/docker-compose.yaml
@@ -92,6 +92,7 @@ services:
     ports:
       - "1080:1080"
 
+  # https://github.com/rroemhild/docker-test-openldap
   ldap:
     image: rroemhild/test-openldap:2.1
     expose: