diff --git a/panels_ipe/css/panels_ipe.css b/panels_ipe/css/panels_ipe.css
index 7d71db0..c0909ec 100644
--- a/panels_ipe/css/panels_ipe.css
+++ b/panels_ipe/css/panels_ipe.css
@@ -207,8 +207,9 @@ div.panels-ipe-newblock a span {
   width: 18px;
   background-position: center center;
   background-repeat: no-repeat;
-  text-align: left;
-  text-indent: -9999em;
+  font: 0/0 a;
+  text-shadow: none;
+  color: transparent;
 }
 
 div.panels-ipe-handlebar-wrapper li.edit a span {