diff --git a/modules/forums/client/less/forum.less b/modules/forums/client/less/forum.less
index ccc7abe9..971417ab 100644
--- a/modules/forums/client/less/forum.less
+++ b/modules/forums/client/less/forum.less
@@ -417,7 +417,12 @@
                 img {
                     max-width: 100%;
                     height: auto;
+                    /* csslint ignore:start */
+                    -webkit-box-flex: 1;
+                    -moz-box-flex: 1;
+                    -ms-box-flex: 1;
                     flex: 1;
+                    /* csslint ignore:end */
                 }
             }
         }