diff -aur sylfilter-0.7/lib/filters/bayes-filter.c sylfilter-0.7.patched/lib/filters/bayes-filter.c
--- sylfilter-0.7/lib/filters/bayes-filter.c	2012-01-13 06:13:15.000000000 +0100
+++ sylfilter-0.7.patched/lib/filters/bayes-filter.c	2012-01-13 16:18:35.000000000 +0100
@@ -11,6 +11,7 @@
 #include <unistd.h>
 #include <errno.h>
 
+#include "config.h"
 #include "filter.h"
 #include "filter-kvs.h"
 #include "filter-utils.h"
diff -aur sylfilter-0.7/lib/filters/textcontent-filter.c sylfilter-0.7.patched/lib/filters/textcontent-filter.c
--- sylfilter-0.7/lib/filters/textcontent-filter.c	2012-01-13 06:13:28.000000000 +0100
+++ sylfilter-0.7.patched/lib/filters/textcontent-filter.c	2012-01-13 16:18:35.000000000 +0100
@@ -8,6 +8,7 @@
 #include <stdio.h>
 #include <string.h>
 
+#include "config.h"
 #include "filter.h"
 #include "textcontent-filter.h"
 
diff -aur sylfilter-0.7/lib/filter-utils.c sylfilter-0.7.patched/lib/filter-utils.c
--- sylfilter-0.7/lib/filter-utils.c	2012-01-13 06:12:10.000000000 +0100
+++ sylfilter-0.7.patched/lib/filter-utils.c	2012-01-13 16:18:35.000000000 +0100
@@ -5,6 +5,7 @@
  */
 
 #include <glib.h>
+#include "config.h"
 
 #ifdef BUILTIN_LIBSYLPH
 #  include "libsylph/utils.h"