diff --git a/static/src/app/army/army-member.component.html b/static/src/app/army/army-member.component.html
index 6bb089d..01ebaed 100644
--- a/static/src/app/army/army-member.component.html
+++ b/static/src/app/army/army-member.component.html
@@ -13,7 +13,7 @@
     <img style="margin-left: 13%;" src="/signatures/{{user.username}}">
   </div>
   <div class="input-group" style="width: 662px; margin-left: 13%;">
-    <input type="text" class="form-control" [(ngModel)]="signatureUrl">
+    <input type="text" style="background: white;" class="form-control" [(ngModel)]="signatureUrl" readonly>
     <span class="input-group-btn">
         <button class="btn btn-default" [class.btn-success]="isCopied" type="button"
                 ngxClipboard [cbContent]="signatureUrl" (cbOnSuccess)="isCopied = true">kopieren</button>