diff --git a/apps/red-ui/src/app/modules/shared/components/assign-user-dropdown/assign-user-dropdown.component.html b/apps/red-ui/src/app/modules/shared/components/assign-user-dropdown/assign-user-dropdown.component.html
index 2dad2d4e3..50fd141f2 100644
--- a/apps/red-ui/src/app/modules/shared/components/assign-user-dropdown/assign-user-dropdown.component.html
+++ b/apps/red-ui/src/app/modules/shared/components/assign-user-dropdown/assign-user-dropdown.component.html
@@ -12,6 +12,7 @@
 
     <iqser-circle-button
         (action)="save.emit(value)"
+        [disabled]="value === oldUser"
         [tooltip]="'assign-user.save' | translate"
         class="pl-1"
         icon="iqser:check"