diff --git a/src/app/components/backlog/backlog.component.html b/src/app/components/backlog/backlog.component.html
index a61ca33..de13738 100644
--- a/src/app/components/backlog/backlog.component.html
+++ b/src/app/components/backlog/backlog.component.html
@@ -46,7 +46,7 @@
             <span class="badge badge-primary">Category: {{story.categoryid || "N/A"}}</span>
             <span class="badge badge-info">Status: {{story.statusid || "N/A"}}</span>
           </div>
-          <div style="text-align: right;">
+          <div style="text-align: right;" *ngIf="selectedSprint != undefined">
           <button type="button" rel="tooltip" (click)="addToSprintBacklog(story)"
                 class="btn btn-sm btn-success btn-icon">
                 <i class="fas fa-plus-square"></i>
@@ -68,12 +68,12 @@
               <span class="badge badge-primary">Category: {{story.categoryid || "N/A"}}</span>
               <span class="badge badge-info">Status: {{story.statusid || "N/A"}}</span>
             </div>
-            <div style="text-align: right;">
-              <button type="button" rel="tooltip" (click)="deleteFromSprintBacklog(story)"
-              class="btn btn-danger btn-sm btn-icon">
-              <i class="fa fa-trash"></i>
-            </button>
-          </div>
+              <div style="text-align: right;">
+                <button type="button" rel="tooltip" (click)="deleteFromSprintBacklog(story)"
+                class="btn btn-danger btn-sm btn-icon">
+                <i class="fa fa-trash"></i>
+              </button>
+            </div>
           </div>
         </div>
       </div>
diff --git a/src/app/components/backlog/backlog.component.ts b/src/app/components/backlog/backlog.component.ts
index 2c251f9..c6b8630 100644
--- a/src/app/components/backlog/backlog.component.ts
+++ b/src/app/components/backlog/backlog.component.ts
@@ -126,7 +126,7 @@ export class BacklogComponent extends TableComponentBase<
   }
 
   public deleteFromSprintBacklog(userstory: ScrumUserstory){
-    userstory.sprintid = null;
+    userstory.sprintid = undefined;
     this.backendService.putUserstory(userstory).subscribe((response) => {
       if (response.status > 399) {
         alert('Fehler');