--- rastertoptch.c	2006-09-08 10:39:27.000000000 -0400
+++ rastertoptch.c.oden	2008-07-02 08:12:55.000000000 -0400
@@ -311,6 +311,7 @@
 #include <math.h>
 #include <cups/raster.h>
 #include <cups/cups.h>
+#include <limits.h>
 
 #if STDC_HEADERS
 # include <string.h>