diff --git a/glyphicons.less b/glyphicons.less
index 82915ce691c2..7b66e6ba15fa 100644
--- a/glyphicons.less
+++ b/glyphicons.less
@@ -27,10 +27,10 @@
   font-weight: normal;
   line-height: 1;
   -webkit-font-smoothing: antialiased;
-}
 
-.glyphicon-block{
-  width: 1em;
+  &:empty{
+    width: 1em;
+  }
 }
 
 // Individual icons