diff --git a/src/frontend/src/Helpers/Utils.js b/src/frontend/src/Helpers/Utils.js
index 766411c5a..fa1269c56 100644
--- a/src/frontend/src/Helpers/Utils.js
+++ b/src/frontend/src/Helpers/Utils.js
@@ -25,7 +25,12 @@ export const convertObjectKeysToSnakeCase = (obj) => {
   for (const [key, value] of Object.entries(obj)) {
     const snakeKey = camelToSnake(key)
 
-    if (value !== null && typeof value === "object" && !Array.isArray(value)) {
+    if (
+      value !== null &&
+      typeof value === "object" &&
+      value instanceof Date === false &&
+      !Array.isArray(value)
+    ) {
       result[snakeKey] = convertObjectKeysToSnakeCase(value)
     } else if (Array.isArray(value)) {
       result[snakeKey] = value?.map((item) =>
diff --git a/src/frontend/src/modules/Client/AddClientModal.vue b/src/frontend/src/modules/Client/AddClientModal.vue
index f2b429614..5767d5e67 100644
--- a/src/frontend/src/modules/Client/AddClientModal.vue
+++ b/src/frontend/src/modules/Client/AddClientModal.vue
@@ -246,6 +246,7 @@ import { notify } from "@/mixins"
 import { PersonService } from "@/services/PersonService"
 import { CityService } from "@/services/CityService"
 import Loader from "@/shared/Loader.vue"
+import moment from "moment"
 
 export default {
   name: "AddClientModal",
@@ -283,7 +284,9 @@ export default {
           isPrimary: true,
           title: this.personService.person.title,
           education: this.personService.person.education,
-          birthDate: this.personService.person.birthDate,
+          birthDate: moment(this.personService.person.birthDate).format(
+            "YYYY-MM-DD HH:mm:ss",
+          ),
           sex: this.personService.person.gender,
           isCustomer: true,
         }