diff --git a/api/src/stores/main.ts b/api/src/stores/main.ts
index 3a38682..839f2b2 100644
--- a/api/src/stores/main.ts
+++ b/api/src/stores/main.ts
@@ -1,6 +1,6 @@
 import { LocalStorage, SessionStorage } from 'quasar';
 import { FG_Plugin } from '@flaschengeist/types';
-import { useSessionStore, useUserStore } from '.';
+import { fixSession, useSessionStore, useUserStore } from '.';
 import { AxiosResponse } from 'axios';
 import { api } from '../internal';
 import { defineStore } from 'pinia';
@@ -63,9 +63,7 @@ export const useMainStore = defineStore({
     async login(userid: string, password: string) {
       try {
         const { data } = await api.post<FG.Session>('/auth', { userid, password });
-        this.session = data;
-        this.session.expires = new Date(this.session.expires);
-        LocalStorage.set('session', this.session);
+        this.session = fixSession(data);
         return true;
       } catch ({ response }) {
         return (<AxiosResponse | undefined>response)?.status || false;
diff --git a/api/src/stores/session.ts b/api/src/stores/session.ts
index d3301d5..c722cb2 100644
--- a/api/src/stores/session.ts
+++ b/api/src/stores/session.ts
@@ -3,6 +3,10 @@ import { defineStore } from 'pinia';
 import { api } from '../internal';
 import { isAxiosError, useMainStore } from '.';
 
+export function fixSession(s?: FG.Session) {
+  return !s ? s : Object.assign(s, { expires: new Date(s.expires) });
+}
+
 export const useSessionStore = defineStore({
   id: 'sessions',
 
@@ -15,15 +19,13 @@ export const useSessionStore = defineStore({
       return await api
         .get(`/auth/${token}`)
         .then(({ data }: AxiosResponse<FG.Session>) => data)
-        .catch(() => null);
+        .catch(() => undefined);
     },
 
     async getSessions() {
       try {
         const { data } = await api.get<FG.Session[]>('/auth');
-        data.forEach((session) => {
-          session.expires = new Date(session.expires);
-        });
+        data.forEach(fixSession);
 
         const mainStore = useMainStore();
         const currentSession = data.find((session) => {
@@ -55,7 +57,7 @@ export const useSessionStore = defineStore({
     async updateSession(lifetime: number, token: string) {
       try {
         const { data } = await api.put<FG.Session>(`auth/${token}`, { value: lifetime });
-        data.expires = new Date(data.expires);
+        fixSession(data);
 
         const mainStore = useMainStore();
         if (mainStore.session?.token == data.token) mainStore.session = data;
diff --git a/api/src/stores/user.ts b/api/src/stores/user.ts
index a5987b9..6981c1d 100644
--- a/api/src/stores/user.ts
+++ b/api/src/stores/user.ts
@@ -2,6 +2,10 @@ import { defineStore } from 'pinia';
 import { api } from '../internal';
 import { isAxiosError, useMainStore } from '.';
 
+export function fixUser(u?: FG.User) {
+  return !u ? u : Object.assign(u, { birthday: u.birthday ? new Date(u.birthday) : undefined });
+}
+
 export const useUserStore = defineStore({
   id: 'users',
 
@@ -24,7 +28,7 @@ export const useUserStore = defineStore({
       if (force || this._dirty_users || idx === -1) {
         try {
           const { data } = await api.get<FG.User>(`/users/${userid}`);
-          if (data.birthday) data.birthday = new Date(data.birthday);
+          fixUser(data);
           if (idx === -1) this.users.push(data);
           else this.users[idx] = data;
           return data;
@@ -40,9 +44,7 @@ export const useUserStore = defineStore({
     async getUsers(force = false) {
       if (force || this._dirty_users) {
         const { data } = await api.get<FG.User[]>('/users');
-        data.forEach((user) => {
-          if (user.birthday) user.birthday = new Date(user.birthday);
-        });
+        data.forEach(fixUser);
         this.users = data;
         this._dirty_users = false;
       }
@@ -74,7 +76,7 @@ export const useUserStore = defineStore({
     },
 
     async deleteAvatar(user: FG.User) {
-      await api.delete(`/users/${user.userid}/avatar`)
+      await api.delete(`/users/${user.userid}/avatar`);
     },
 
     async getPermissions(force = false) {