diff --git a/rest_auth/registration/serializers.py b/rest_auth/registration/serializers.py
index 9dc6f3a..2271f1e 100644
--- a/rest_auth/registration/serializers.py
+++ b/rest_auth/registration/serializers.py
@@ -211,8 +211,10 @@ class RegisterSerializer(serializers.Serializer):
         user = adapter.save_user(request, user, self, commit=False)
         try:
             adapter.clean_password(self.cleaned_data['password1'], user=user)
-        except DjangoValidationError as e:
-            raise serializers.ValidationError(e.messages)
+        except DjangoValidationError as exc:
+            raise serializers.ValidationError(
+                detail=serializers.as_serializer_error(exc)
+            )
         user.save()
         self.custom_signup(request, user)
         setup_user_email(request, user, [])