diff --git a/tt-rss.css b/tt-rss.css
index 3dfe3bef7..b0f2efe6d 100644
--- a/tt-rss.css
+++ b/tt-rss.css
@@ -57,6 +57,7 @@ div.postReply div.postContent {
 div.postReply div.postContent img {
 	border-width : 0px;
 	max-width : 98%;
+	height: auto;
 }
 
 div.postReply div.postEnclosures {