diff --git a/lib/isc/include/isc/Makefile.in b/lib/isc/include/isc/Makefile.in
index e06b9c9240..2da5845cd6 100644
--- a/lib/isc/include/isc/Makefile.in
+++ b/lib/isc/include/isc/Makefile.in
@@ -34,7 +34,7 @@ HEADERS =	app.h assertions.h base64.h bind9.h bitstring.h boolean.h \
 		interfaceiter.h @ISC_IPV6_H@ iterated_hash.h json.h lang.h lex.h \
 		lfsr.h lib.h list.h log.h \
 		magic.h md5.h mem.h msgcat.h msgs.h mutexblock.h \
-		namespace.h netaddr.h ondestroy.h os.h parseint.h \
+		netaddr.h ondestroy.h os.h parseint.h \
 		print.h quota.h radix.h random.h ratelimiter.h \
 		refcount.h regex.h region.h resource.h \
 		result.h resultclass.h rwlock.h safe.h serial.h sha1.h sha2.h \