diff --git a/res/css/structures/_MatrixChat.scss b/res/css/structures/_MatrixChat.scss
index 43bf1b9c3c..c837aee791 100644
--- a/res/css/structures/_MatrixChat.scss
+++ b/res/css/structures/_MatrixChat.scss
@@ -40,6 +40,7 @@ limitations under the License.
 }
 
 .mx_MatrixChat {
+    position: relative;
     width: 100%;
     height: 100%;