diff --git a/addons/mail/static/src/css/announcement.css b/addons/mail/static/src/css/announcement.css
index 5d2a0ecba44..6efcfb69adb 100644
--- a/addons/mail/static/src/css/announcement.css
+++ b/addons/mail/static/src/css/announcement.css
@@ -1,3 +1,7 @@
 .openerp .annoucement_bar {
     display: none;
 }
+
+#announcement_bar_table > table {
+	width: 100%;
+}
\ No newline at end of file