diff --git a/lib/dns/rdata/rdatastructpre.h b/lib/dns/rdata/rdatastructpre.h
index d711a9079f..110af4b76d 100644
--- a/lib/dns/rdata/rdatastructpre.h
+++ b/lib/dns/rdata/rdatastructpre.h
@@ -21,6 +21,8 @@
 #include <isc/lang.h>
 #include <isc/sockaddr.h>
 
+#include <dns/types.h>
+
 ISC_LANG_BEGINDECLS
 
 typedef struct dns_rdatacommon {