diff --git a/scp/css/scp.css b/scp/css/scp.css
index e4ae15c0a07ebeec2adf989ff521702ea29909b4..a933d2855f952b678ccf3fbbc3e9b6d3da7c3947 100644
--- a/scp/css/scp.css
+++ b/scp/css/scp.css
@@ -944,7 +944,7 @@ img.avatar {
 }
 .avatar > img.avatar {
     width: 100%;
-    height: 100%;
+    height: auto;
 }
 .thread-entry .header {
     padding: 8px 0.9em;