diff --git a/lib/dns/rbtdb.h b/lib/dns/rbtdb.h
index dcc729ad79..9cbaeee2a5 100644
--- a/lib/dns/rbtdb.h
+++ b/lib/dns/rbtdb.h
@@ -26,8 +26,6 @@
  * DNS Red-Black Tree DB Implementation
  */
 
-#include <dns/db.h>
-
 dns_result_t
 dns_rbtdb_create(isc_mem_t *mctx, dns_name_t *base, isc_boolean_t is_cache,
 		 dns_rdataclass_t rdclass, unsigned int argc, char *argv[],