diff --git a/core/css/icons.css b/core/css/icons.css
index d3d4d7da70..027a3f8557 100644
--- a/core/css/icons.css
+++ b/core/css/icons.css
@@ -1,4 +1,4 @@
-.icon {
+[class^="icon-"], [class*=" icon-"] {
 	background-repeat: no-repeat;
 	background-position: center;
 }