diff --git a/extensions/emoji/less/forum/extension.less b/extensions/emoji/less/forum/extension.less
index 5d164eefd..ddf695f1e 100644
--- a/extensions/emoji/less/forum/extension.less
+++ b/extensions/emoji/less/forum/extension.less
@@ -2,6 +2,7 @@ img.emoji {
   height: 1.5em;
   margin: 0 .05em 0 .1em;
   vertical-align: -0.3em;
+  image-rendering: -webkit-optimize-contrast;
 }
 
 .EmojiDropdown {