diff --git a/projects/ucap-webmessenger-ui-chat/src/lib/components/messages.component.html b/projects/ucap-webmessenger-ui-chat/src/lib/components/messages.component.html
index fc0ad4fa..1241c996 100644
--- a/projects/ucap-webmessenger-ui-chat/src/lib/components/messages.component.html
+++ b/projects/ucap-webmessenger-ui-chat/src/lib/components/messages.component.html
@@ -43,12 +43,14 @@
           <ucap-chat-message-box-information
             *ngSwitchCase="EventType.RenameRoom"
             [message]="message"
+            class="information-msg"
           >
           </ucap-chat-message-box-information>
           <ucap-chat-message-box-information
             *ngSwitchCase="EventType.GuideForRoomTimerChanged"
             [message]="message"
             [senderName]="getUserName(message.senderSeq)"
+            class="information-msg"
           >
           </ucap-chat-message-box-information>
         </ng-container>