diff --git a/content/anmeldung.md b/content/anmeldung.md
index 1d46cdc..c3450f2 100644
--- a/content/anmeldung.md
+++ b/content/anmeldung.md
@@ -53,7 +53,7 @@ date: '2020-02-12'
             <label for="ddmember" style="align-self: center;">Ich bin &lt;DD&gt;-Mitglied!</label>
         </div>
         <div class="grow-1 ddmember hidden">
-            <input id="hex" name="hex" type="text" placeholder="0x00" pattern="[0-9a-fA-F]{1,2}x[0-9a-fA-F]{1,2}" />
+            <input id="hex" name="hex" type="text" placeholder="0x00" pattern="[0-9a-fA-F]{1,2}x[0-9a-fA-F]{1,3}" />
             <label for="hex">Hex-ID (z.B. 0x00)</label>
         </div>
         <div class="grow-1 ddmember hidden">