diff --git a/src/skins/vector/css/atoms/MemberAvatar.css b/src/skins/vector/css/atoms/MemberAvatar.css
index e76c2ad1..5f7d18cb 100644
--- a/src/skins/vector/css/atoms/MemberAvatar.css
+++ b/src/skins/vector/css/atoms/MemberAvatar.css
@@ -15,8 +15,7 @@ limitations under the License.
 */
 
 .mx_MemberAvatar {
-    /* commenting this out as it breaks on FF seemingly */
-/*    position: relative; */
+    position: relative; 
 }
 
 .mx_MemberAvatar_initial {
diff --git a/src/skins/vector/css/molecules/EventTile.css b/src/skins/vector/css/molecules/EventTile.css
index 255eef34..e4d310c0 100644
--- a/src/skins/vector/css/molecules/EventTile.css
+++ b/src/skins/vector/css/molecules/EventTile.css
@@ -27,6 +27,7 @@ limitations under the License.
     margin-left: -73px;
     margin-top: -4px;
     float: left;
+    position: relative;
 }
 
 .mx_EventTile_avatar img {