Index: util-hurd-20170102/clisp/defs.mk
===================================================================
--- util-hurd-20170102.orig/clisp/defs.mk
+++ util-hurd-20170102/clisp/defs.mk
@@ -4,8 +4,8 @@ CFLAGS = -Wall -Wextra -D_GNU_SOURCE=1 -
 
 LDFLAGS = -lmachuser -lc -lhurduser
 
-HURD_DIRECTORY = /usr/include/hurd
-MACH_DIRECTORY = /usr/include/mach
+HURD_DIRECTORY = /usr/include/$(DEB_HOST_MULTIARCH)/hurd
+MACH_DIRECTORY = /usr/include/$(DEB_HOST_MULTIARCH)/mach
 MIG_SERVER = mig -prefix lisp_S_ -user /dev/null -header /dev/null -server
 MIG_USER = mig -server /dev/null -header /dev/null -user
 
