diff --git a/res/css/views/rooms/_RoomPreviewBar.scss b/res/css/views/rooms/_RoomPreviewBar.scss
index 85b6916226..b3f6a12103 100644
--- a/res/css/views/rooms/_RoomPreviewBar.scss
+++ b/res/css/views/rooms/_RoomPreviewBar.scss
@@ -25,6 +25,9 @@ limitations under the License.
     h3 {
         font-size: 18px;
         font-weight: 600;
+        // break-word, with fallback to break-all, which is wider supported
+        word-break: break-all;
+        word-break: break-word;
 
         &.mx_RoomPreviewBar_spinnerTitle {
             display: flex;