diff --git a/webstead.xhtml b/webstead.xhtml
index 8e7be67..af2932d 100644
--- a/webstead.xhtml
+++ b/webstead.xhtml
@@ -25,6 +25,7 @@
                     .setAttribute("d", charstring
                                   .replaceAll(/<!--(?:[^-]|-[^-])*-->/g, "")
                                   .replace(/^.* [hv]stem /, "")
+                                  .replace(/^cntrmask [01]*/, "")
                                   .replace(/^/, "m ")
                                   .replaceAll(/ rmoveto/g, "")
                                   .replaceAll(/ rlineto/g, "m")