diff --git a/segments/_entryForm.php b/segments/_entryForm.php
index 6c0c7c3..302e770 100644
--- a/segments/_entryForm.php
+++ b/segments/_entryForm.php
@@ -113,14 +113,14 @@ function consumeTan($tanID) {
           <div class="input-group-prepend">
             <span class="input-group-text" id="inputGroup-sizing-sm">Vorname*</span>
           </div>
-          <input type="text" class="form-control" name="entryVorname" aria-label="Small" aria-describedby="inputGroup-sizing-sm">
+          <input type="text" class="form-control" name="entryVorname" aria-label="Small" aria-describedby="inputGroup-sizing-sm" required>
         </div>
         <!-- Nachname-->
         <div class="input-group input-group-sm mb-3">
           <div class="input-group-prepend">
             <span class="input-group-text" id="inputGroup-sizing-sm">Nachname*</span>
           </div>
-          <input type="text" class="form-control" name="entryNachname" aria-label="Small" aria-describedby="inputGroup-sizing-sm">
+          <input type="text" class="form-control" name="entryNachname" aria-label="Small" aria-describedby="inputGroup-sizing-sm"required>
         </div>
         <!-- Geburtstag-->
         <div class="input-group input-group-sm mb-3">
@@ -148,7 +148,7 @@ function consumeTan($tanID) {
           <div class="input-group-prepend">
             <span class="input-group-text" id="inputGroup-sizing-sm">Woher kennen wir uns?*</span>
           </div>
-          <input type="text" class="form-control" name="entryKennen" aria-label="Small" aria-describedby="inputGroup-sizing-sm">
+          <input type="text" class="form-control" name="entryKennen" aria-label="Small" aria-describedby="inputGroup-sizing-sm" required>
         </div>
         <!-- Festnetz-->
         <div class="input-group input-group-sm mb-3">
@@ -274,7 +274,7 @@ function consumeTan($tanID) {
           <div class="input-group-prepend">
             <span class="input-group-text" id="inputGroup-sizing-sm">Eintrags-TAN*</span>
           </div>
-          <input type="text" class="form-control" name="tanID" aria-label="Small" aria-describedby="inputGroup-sizing-sm">
+          <input type="text" class="form-control" name="tanID" aria-label="Small" aria-describedby="inputGroup-sizing-sm"required>
         </div>
         <!-- Absenden Button-->
         <div class="modal-footer">
diff --git a/segments/_login.php b/segments/_login.php
index a3fb3c6..c9816bd 100644
--- a/segments/_login.php
+++ b/segments/_login.php
@@ -37,13 +37,13 @@ if( (isset($_POST['loginName'])) && isset($_POST['loginPassword'])){
           <div class="input-group-prepend">
             <span class="input-group-text" id="inputGroup-sizing-sm">Username</span>
           </div>
-          <input type="text" class="form-control" name="loginName" aria-label="Small" aria-describedby="inputGroup-sizing-sm">
+          <input type="text" class="form-control" name="loginName" aria-label="Small" aria-describedby="inputGroup-sizing-sm" required>
         </div>
         <div class="input-group input-group-sm mb-3">
           <div class="input-group-prepend">
             <span class="input-group-text" id="inputGroup-sizing-sm">Password</span>
           </div>
-          <input type="password" class="form-control" name="loginPassword" aria-label="Small" aria-describedby="inputGroup-sizing-sm">
+          <input type="password" class="form-control" name="loginPassword" aria-label="Small" aria-describedby="inputGroup-sizing-sm" required>
         </div>
         <hr />
         <button id="btnLogin" type="submit" style="float: right;" class="btn btn-primary">Login</button>
diff --git a/segments/_register.php b/segments/_register.php
index 5a61302..91e4ca1 100644
--- a/segments/_register.php
+++ b/segments/_register.php
@@ -14,19 +14,19 @@
 <div class="input-group-prepend">
   <span class="input-group-text" id="inputGroup-sizing-sm">Username</span>
 </div>
-<input type="text" class="form-control"  name="registerName" aria-label="Small" aria-describedby="inputGroup-sizing-sm">
+<input type="text" class="form-control"  name="registerName" aria-label="Small" aria-describedby="inputGroup-sizing-sm" required>
 </div>
 <div class="input-group input-group-sm mb-3">
 <div class="input-group-prepend">
   <span class="input-group-text" id="inputGroup-sizing-sm">Password</span>
 </div>
-<input type="password" class="form-control" name="registerPassword" aria-label="Small" aria-describedby="inputGroup-sizing-sm">
+<input type="password" class="form-control" name="registerPassword" aria-label="Small" aria-describedby="inputGroup-sizing-sm" required>
 </div>
 <div class="input-group input-group-sm mb-3">
 <div class="input-group-prepend">
   <span class="input-group-text" id="inputGroup-sizing-sm">EmailAdress</span>
 </div>
-<input type="text" class="form-control" name="registerMail" aria-label="Small" aria-describedby="inputGroup-sizing-sm">
+<input type="text" class="form-control" name="registerMail" aria-label="Small" aria-describedby="inputGroup-sizing-sm" required>
 </div>
 <hr />
 ╭∩╮(ಠ۝ಠ)╭∩╮