diff --git a/backend/src/app/http/errors.clj b/backend/src/app/http/errors.clj
index 803c72bee..9e27ce9f1 100644
--- a/backend/src/app/http/errors.clj
+++ b/backend/src/app/http/errors.clj
@@ -61,8 +61,15 @@
 
 (defmethod handle-exception :validation
   [err _]
-  (let [edata (ex-data err)]
-    {:status 400 :body (dissoc edata ::s/problems ::s/value)}))
+  (let [data    (ex-data err)
+        explain (binding [s/*explain-out* expound/printer]
+                  (with-out-str
+                    (s/explain-out (update data ::s/problems #(take 10 %)))))]
+    {:status 400
+     :body (-> data
+               (dissoc ::s/problems)
+               (dissoc ::s/value)
+               (assoc :explain explain))}))
 
 (defmethod handle-exception :assertion
   [error request]
diff --git a/common/src/app/common/spec.cljc b/common/src/app/common/spec.cljc
index 61688c426..85c4a6912 100644
--- a/common/src/app/common/spec.cljc
+++ b/common/src/app/common/spec.cljc
@@ -257,7 +257,7 @@
       (let [data (s/explain-data spec data)]
         (throw (ex/error :type :validation
                          :code :spec-validation
-                         ::s/problems (::s/problems data)))))
+                         ::ex/data data))))
     result))
 
 (defmacro instrument!
diff --git a/frontend/src/app/main/errors.cljs b/frontend/src/app/main/errors.cljs
index 194ff90c1..ce0a0eb5e 100644
--- a/frontend/src/app/main/errors.cljs
+++ b/frontend/src/app/main/errors.cljs
@@ -81,7 +81,13 @@
   (js/console.group "Validation Error:")
   (ex/ignoring
    (js/console.info
-    (with-out-str (pprint error))))
+    (with-out-str (pprint (dissoc error :explain)))))
+
+  (when-let [explain (:explain error)]
+    (js/console.group "Spec explain:")
+    (js/console.log explain)
+    (js/console.groupEnd "Spec explain:"))
+
   (js/console.groupEnd "Validation Error:"))