--- src/include/aconfig.h.in.orig	Wed Jul  4 22:26:52 2007
+++ src/include/aconfig.h.in	Wed Jul  4 22:26:58 2007
@@ -55,4 +55,5 @@
 #undef SIZEOF_LONG
 #undef HAVE_GETTEXT
 #undef NO_MALLOC_H
+#undef PREFIX
 #endif