diff --git a/lib/isc/include/isc/Makefile.in b/lib/isc/include/isc/Makefile.in
index d8ee553434..81a0f27309 100644
--- a/lib/isc/include/isc/Makefile.in
+++ b/lib/isc/include/isc/Makefile.in
@@ -6,7 +6,7 @@ top_srcdir =	@top_srcdir@
 @BIND9_VERSION@
 
 HEADERS =	assertions.h boolean.h buffer.h error.h event.h heap.h \
-		inet.h int.h lex.h list.h mem.h rbtgen.h region.h result.h \
+		int.h lang.h lex.h list.h mem.h rbtgen.h region.h result.h \
 		rwlock.h socket.h str.h task.h timer.h types.h
 
 SUBDIRS =