diff --git a/src/skins/vector/css/matrix-react-sdk/views/rooms/MessageComposer.css b/src/skins/vector/css/matrix-react-sdk/views/rooms/MessageComposer.css
index 6c7ac4dcb4..a7ed3e7f3b 100644
--- a/src/skins/vector/css/matrix-react-sdk/views/rooms/MessageComposer.css
+++ b/src/skins/vector/css/matrix-react-sdk/views/rooms/MessageComposer.css
@@ -19,6 +19,7 @@ limitations under the License.
     vertical-align: middle;
     margin: auto;
     border-top: 1px solid #e5e5e5;
+    position: relative;
 }
 
 .mx_MessageComposer_autocomplete_wrapper {