diff --git a/frontend/src/components/AuthenticationTabs.tsx b/frontend/src/components/AuthenticationTabs.tsx
index 85180d0..4fcebe0 100644
--- a/frontend/src/components/AuthenticationTabs.tsx
+++ b/frontend/src/components/AuthenticationTabs.tsx
@@ -1,11 +1,6 @@
-import {
-  Tabs,
-  TabsContent,
-  TabsList,
-  TabsTrigger,
-} from "@/components/ui/tabs"
-import { RegisterForm } from "./RegisterForm"
-import { LoginForm } from "./LoginForm"
+import { Tabs, TabsContent, TabsList, TabsTrigger } from "@/components/ui/tabs";
+import { RegisterForm } from "./RegisterForm";
+import { LoginForm } from "./LoginForm";
 import { useState } from "react";
 
 export type ActiveTab = "login" | "register";
@@ -16,8 +11,12 @@ const AuthenticationTabs = () => {
   return (
     <Tabs defaultValue="login" value={activeTab} className="w-[400px]">
       <TabsList className="grid w-full grid-cols-2">
-        <TabsTrigger value="login" onClick={(_) => setActiveTab("login")}>Login</TabsTrigger>
-        <TabsTrigger value="register" onClick={(_) => setActiveTab("register")}>Register</TabsTrigger>
+        <TabsTrigger value="login" onClick={(_) => setActiveTab("login")}>
+          Login
+        </TabsTrigger>
+        <TabsTrigger value="register" onClick={(_) => setActiveTab("register")}>
+          Register
+        </TabsTrigger>
       </TabsList>
       <TabsContent value="login">
         <LoginForm setActiveTab={setActiveTab} />
@@ -26,6 +25,6 @@ const AuthenticationTabs = () => {
         <RegisterForm setActiveTab={setActiveTab} />
       </TabsContent>
     </Tabs>
-  )
-}
-export { AuthenticationTabs }
\ No newline at end of file
+  );
+};
+export { AuthenticationTabs };
diff --git a/frontend/src/components/LoginForm.tsx b/frontend/src/components/LoginForm.tsx
index ab22f0a..1de6ebd 100644
--- a/frontend/src/components/LoginForm.tsx
+++ b/frontend/src/components/LoginForm.tsx
@@ -21,19 +21,17 @@ import { passwordSchema } from "@/lib/utils/schemas";
 import { Card, CardContent, CardFooter, CardHeader } from "./ui/card";
 import { AxiosError } from "axios";
 import type { ActiveTab } from "./AuthenticationTabs";
+import type React from "react";
 
-const FormSchema = z
-  .object({
-    password: passwordSchema,
-    email: z
-      .string()
-      .email({ message: "Email must be a valid email address." }),
-  });
+const FormSchema = z.object({
+  password: passwordSchema,
+  email: z.string().email({ message: "Email must be a valid email address." }),
+});
 
 type FormValues = z.infer<typeof FormSchema>;
 
 type LoginFormProps = {
-  setActiveTab: React.Dispatch<React.SetStateAction<ActiveTab>>
+  setActiveTab: React.Dispatch<React.SetStateAction<ActiveTab>>;
 };
 
 const LoginForm = ({ setActiveTab }: LoginFormProps) => {
@@ -63,14 +61,12 @@ const LoginForm = ({ setActiveTab }: LoginFormProps) => {
   }
 
   return (
-    <Form {...form} >
+    <Form {...form}>
       <Card>
         <form onSubmit={form.handleSubmit(onSubmit)}>
           <CardHeader className="flex flex-col items-center">
             <h2 className="text-xl font-semibold">Login</h2>
-            <p className="text-sm text-slate-600">
-              Login with your account.
-            </p>
+            <p className="text-sm text-slate-600">Login with your account.</p>
           </CardHeader>
           <CardContent>
             <FormField
@@ -101,13 +97,24 @@ const LoginForm = ({ setActiveTab }: LoginFormProps) => {
             />
           </CardContent>
           <CardFooter className="flex flex-col">
-            <Button type="submit" className="my-2 w-1/2">Login</Button>
-            <p className="text-sm text-slate-600 my-4"> - or if you have not - </p>
-            <Button className="my-2" variant="link" onClick={() => setActiveTab("register")}>Register</Button>
+            <Button type="submit" className="my-2 w-1/2">
+              Login
+            </Button>
+            <p className="text-sm text-slate-600 my-4">
+              {" "}
+              - or if you have not -{" "}
+            </p>
+            <Button
+              className="my-2"
+              variant="link"
+              onClick={() => setActiveTab("register")}
+            >
+              Register
+            </Button>
           </CardFooter>
         </form>
       </Card>
-    </Form >
+    </Form>
   );
 };
 
diff --git a/frontend/src/components/MaskedPassword.tsx b/frontend/src/components/MaskedPassword.tsx
index 77f9443..cdff3f2 100644
--- a/frontend/src/components/MaskedPassword.tsx
+++ b/frontend/src/components/MaskedPassword.tsx
@@ -27,8 +27,7 @@ const MaskedPassword = ({
     setInputMask((mask) => (mask === "text" ? "password" : "text"));
 
   return (
-    <div
-      className="flex w-full space-x-2">
+    <div className="flex w-full space-x-2">
       <Input
         type={inputMask}
         placeholder={placeholder}
@@ -43,9 +42,10 @@ const MaskedPassword = ({
         className="flex items-center justify-center"
         variant="secondary"
         onClick={(event) => {
-          event.preventDefault()
-          togglePassword()
-        }}>
+          event.preventDefault();
+          togglePassword();
+        }}
+      >
         {inputMask === "text" ? visible : hidden}
       </Button>
     </div>
diff --git a/frontend/src/components/RegisterForm.tsx b/frontend/src/components/RegisterForm.tsx
index 50b13e2..6a413a5 100644
--- a/frontend/src/components/RegisterForm.tsx
+++ b/frontend/src/components/RegisterForm.tsx
@@ -1,4 +1,3 @@
-
 import { zodResolver } from "@hookform/resolvers/zod";
 import { useForm } from "react-hook-form";
 import { z } from "zod";
@@ -20,6 +19,7 @@ import { passwordSchema, nameSchema } from "@/lib/utils/schemas";
 import { Card, CardContent, CardFooter, CardHeader } from "./ui/card";
 import { AxiosError } from "axios";
 import type { ActiveTab } from "./AuthenticationTabs";
+import type React from "react";
 
 const FormSchema = z
   .object({
@@ -63,9 +63,7 @@ const RegisterForm = ({ setActiveTab }: RegisterFormProps) => {
         toast({
           variant: "destructive",
           title: "Error during registration",
-          description: (
-            <p>{error.response.data?.error || "Unknown error"}</p>
-          ),
+          description: <p>{error.response.data?.error || "Unknown error"}</p>,
         });
       }
     }
@@ -78,7 +76,8 @@ const RegisterForm = ({ setActiveTab }: RegisterFormProps) => {
           <CardHeader className="flex flex-col items-center">
             <h2 className="text-xl font-semibold">Registration</h2>
             <p className="text-sm text-slate-600">
-              Make changes to your account here. Click 'Register' when you're done.
+              Make changes to your account here. Click 'Register' when you're
+              done.
             </p>
           </CardHeader>
           <CardContent>
@@ -149,13 +148,24 @@ const RegisterForm = ({ setActiveTab }: RegisterFormProps) => {
             />
           </CardContent>
           <CardFooter className="flex flex-col">
-            <Button type="submit" className="my-2 w-1/2">Register</Button>
-            <p className="text-sm text-slate-600 my-4"> - or if you already have and account - </p>
-            <Button className="my-2" variant="link" onClick={() => setActiveTab("login")}>Login</Button>
+            <Button type="submit" className="my-2 w-1/2">
+              Register
+            </Button>
+            <p className="text-sm text-slate-600 my-4">
+              {" "}
+              - or if you already have and account -{" "}
+            </p>
+            <Button
+              className="my-2"
+              variant="link"
+              onClick={() => setActiveTab("login")}
+            >
+              Login
+            </Button>
           </CardFooter>
         </form>
-      </Card >
-    </Form >
+      </Card>
+    </Form>
   );
 };
 
diff --git a/frontend/src/components/ui/card.tsx b/frontend/src/components/ui/card.tsx
index 77e9fb7..75cc369 100644
--- a/frontend/src/components/ui/card.tsx
+++ b/frontend/src/components/ui/card.tsx
@@ -1,6 +1,6 @@
-import * as React from "react"
+import * as React from "react";
 
-import { cn } from "@/lib/utils"
+import { cn } from "@/lib/utils";
 
 const Card = React.forwardRef<
   HTMLDivElement,
@@ -10,12 +10,12 @@ const Card = React.forwardRef<
     ref={ref}
     className={cn(
       "rounded-xl border bg-card text-card-foreground shadow",
-      className
+      className,
     )}
     {...props}
   />
-))
-Card.displayName = "Card"
+));
+Card.displayName = "Card";
 
 const CardHeader = React.forwardRef<
   HTMLDivElement,
@@ -26,8 +26,8 @@ const CardHeader = React.forwardRef<
     className={cn("flex flex-col space-y-1.5 p-6", className)}
     {...props}
   />
-))
-CardHeader.displayName = "CardHeader"
+));
+CardHeader.displayName = "CardHeader";
 
 const CardTitle = React.forwardRef<
   HTMLParagraphElement,
@@ -38,8 +38,8 @@ const CardTitle = React.forwardRef<
     className={cn("font-semibold leading-none tracking-tight", className)}
     {...props}
   />
-))
-CardTitle.displayName = "CardTitle"
+));
+CardTitle.displayName = "CardTitle";
 
 const CardDescription = React.forwardRef<
   HTMLParagraphElement,
@@ -50,16 +50,16 @@ const CardDescription = React.forwardRef<
     className={cn("text-sm text-muted-foreground", className)}
     {...props}
   />
-))
-CardDescription.displayName = "CardDescription"
+));
+CardDescription.displayName = "CardDescription";
 
 const CardContent = React.forwardRef<
   HTMLDivElement,
   React.HTMLAttributes<HTMLDivElement>
 >(({ className, ...props }, ref) => (
   <div ref={ref} className={cn("p-6 pt-0", className)} {...props} />
-))
-CardContent.displayName = "CardContent"
+));
+CardContent.displayName = "CardContent";
 
 const CardFooter = React.forwardRef<
   HTMLDivElement,
@@ -70,7 +70,14 @@ const CardFooter = React.forwardRef<
     className={cn("flex items-center p-6 pt-0", className)}
     {...props}
   />
-))
-CardFooter.displayName = "CardFooter"
+));
+CardFooter.displayName = "CardFooter";
 
-export { Card, CardHeader, CardFooter, CardTitle, CardDescription, CardContent }
+export {
+  Card,
+  CardHeader,
+  CardFooter,
+  CardTitle,
+  CardDescription,
+  CardContent,
+};
diff --git a/frontend/src/lib/utils/schemas.ts b/frontend/src/lib/utils/schemas.ts
index fc3599c..0b3daa9 100644
--- a/frontend/src/lib/utils/schemas.ts
+++ b/frontend/src/lib/utils/schemas.ts
@@ -1,28 +1,40 @@
-import { z } from "zod";
+import { z, ZodIssueCode } from "zod";
 
 const nameSchema = z
   .string()
   .min(2, { message: "Name must be at least 2 characters long." })
   .max(40, { message: "Name must be at most 40 characters long." });
 
-const passwordSchema = z
-  .string()
-  .min(4, { message: "Password must be at least 4 characters long." })
-  .max(40, { message: "Password must be at most 40 characters long." })
-  .refine((v) => !/\s/.test(v), {
-    message: "Password cannot contain whitespace.",
-  })
-  .refine((v) => /[A-Z]/.test(v), {
-    message: "Password must contain at least one uppercase letter.",
-  })
-  .refine((v) => /\d/.test(v), {
-    message: "Password must contain at least one digit.",
-  })
-  .refine((v) => /[!@#$%^&*()_+\-=\[\]{};':"\\|,.<>\/?]+/.test(v), {
-    message: "Password must contain at least one special character.",
-  })
-  .refine((v) => /[a-z]/.test(v), {
-    message: "Password must contain at least one lowercase letter.",
-  });
+const passwordSchema = z.string().superRefine((val, ctx): val is string => {
+  const issues: string[] = [];
+  if (val.length < 4) {
+    issues.push("at least 4 characters");
+  }
+  if (val.length > 40) {
+    issues.push("less then 40 characters");
+  }
+  if (/\s/.test(val)) {
+    issues.push("no whitespace");
+  }
+  if (!/[A-Z]/.test(val)) {
+    issues.push("at least one uppercase letter");
+  }
+  if (!/\d/.test(val)) {
+    issues.push("at least one digit");
+  }
+  if (!/[!@#$%^&*()_+\-=\[\]{};':"\\|,.<>\/?]+/.test(val)) {
+    issues.push("at least one special character");
+  }
+  if (!/[a-z]/.test(val)) {
+    issues.push("at least one lowercase letter");
+  }
+  if (issues.length) {
+    ctx.addIssue({
+      code: ZodIssueCode.custom,
+      message: `Password must contain ${issues.join(", ")}.`,
+    });
+  }
+  return false;
+});
 
 export { passwordSchema, nameSchema };
diff --git a/frontend/src/pages/Main.tsx b/frontend/src/pages/Main.tsx
index 1ca83b3..e0ccafc 100644
--- a/frontend/src/pages/Main.tsx
+++ b/frontend/src/pages/Main.tsx
@@ -2,7 +2,6 @@ import { Link } from "react-router-dom";
 import { usePetClinicState } from "../state";
 import { AuthenticationTabs } from "@/components/AuthenticationTabs";
 
-
 export function Main() {
   const { auth } = usePetClinicState();
   const isAuthenticated = auth.token !== null;