Index: driver/ptouch-pt.xml
--- driver/ptouch-pt.xml.orig
+++ driver/ptouch-pt.xml
@@ -24,7 +24,7 @@ USA
  <url></url>
  <execution>
   <filter />
-  <prototype>gs -q -dBATCH -dPARANOIDSAFER -dQUIET -dNOPAUSE -sDEVICE=cups %A%Z -sOutputFile=- - | rastertoptch '%B'</prototype>
+  <prototype>gs -q -dBATCH -dPARANOIDSAFER -dQUIET -dNOPAUSE -sDEVICE=cups %A%Z -sOutputFile=- - | ${PREFIX}/libexec/cups/filter/rastertoptch '%B'</prototype>
   <margins>
     <general>
       <left>0</left>