diff --git a/res/css/views/dialogs/_UntrustedDeviceDialog.scss b/res/css/views/dialogs/_UntrustedDeviceDialog.scss
index 905919e792..30b01c3f40 100644
--- a/res/css/views/dialogs/_UntrustedDeviceDialog.scss
+++ b/res/css/views/dialogs/_UntrustedDeviceDialog.scss
@@ -26,7 +26,7 @@ limitations under the License.
 
     .mx_Dialog_buttons {
         display: flex;
-        justify-content: end;
+        justify-content: flex-end;
         gap: 8px;
     }
 }