diff --git a/less/topic.less b/less/topic.less
index f2b844b..df4ca1c 100644
--- a/less/topic.less
+++ b/less/topic.less
@@ -238,6 +238,7 @@
 		img {
 			border-radius: 50%;
 			width: 20px;
+			height: 20px;
 			margin-right: -12px;
 			vertical-align: middle;
 		}