diff --git a/res/css/views/rooms/_BasicMessageComposer.scss b/res/css/views/rooms/_BasicMessageComposer.scss
index a90097846c..e897352d7e 100644
--- a/res/css/views/rooms/_BasicMessageComposer.scss
+++ b/res/css/views/rooms/_BasicMessageComposer.scss
@@ -82,6 +82,7 @@ limitations under the License.
         cursor: pointer;
         border-radius: 4px;
         background-color: $message-action-bar-bg-color;
+        user-select: none;
 
         &.mx_BasicMessageComposer_formatBar_shown {
             display: block;