diff --git a/src/or/include.am b/src/or/include.am
index 959b26dcf9..7b12b56eb1 100644
--- a/src/or/include.am
+++ b/src/or/include.am
@@ -153,6 +153,7 @@ ORHEADERS = \
 	src/or/dirserv.h				\
 	src/or/dirvote.h				\
 	src/or/dns.h					\
+	src/or/dns_structs.h				\
 	src/or/dnsserv.h				\
 	src/or/eventdns_tor.h				\
 	src/or/ext_orport.h				\