diff --git a/lib/rplan.h b/lib/rplan.h
index 99344a43af2ebcda4412fd2253eded74ecf480ec..368833dac62709aa82b6cd33f4d3a80960abe939 100644
--- a/lib/rplan.h
+++ b/lib/rplan.h
@@ -178,6 +178,3 @@ bool kr_rplan_satisfies(struct kr_query *closure, const knot_dname_t *name, uint
 KR_EXPORT KR_PURE
 struct kr_query *kr_rplan_resolved(struct kr_rplan *rplan);
 
-/** Return query predecessor. */
-KR_EXPORT KR_PURE
-struct kr_query *kr_rplan_next(struct kr_query *qry);