diff -urN Mail-SpamAssassin-3.0.0.orig/Makefile.PL Mail-SpamAssassin-3.0.0/Makefile.PL
--- Mail-SpamAssassin-3.0.0.orig/Makefile.PL	2004-08-27 19:37:35.000000000 +0300
+++ Mail-SpamAssassin-3.0.0/Makefile.PL	2004-11-03 16:28:09.000000000 +0200
@@ -1083,7 +1083,7 @@
 LIBSPAMC_SRC    = spamc/libspamc.c spamc/utils.c
 
 $(SPAMC_MAKEFILE): $(SPAMC_MAKEFILE).in $(SPAMC_MAKEFILE).win
-	$(CONFIGURE) --prefix="$(I_PREFIX)" --sysconfdir="$(I_CONFDIR)" --datadir="$(I_DATADIR)" --enable-ssl="$(ENABLE_SSL)"
+	$(CONFIGURE) --prefix="$(I_PREFIX)" --sysconfdir="$(I_CONFDIR)" --datadir="$(I_DATADIR)" --enable-ssl="$(ENABLE_SSL)" --includedir=/usr/kerberos/include
 
 spamc_has_moved:
 	$(NOECHO) echo "***"