diff --git a/lib/legacy/libknot/processing/layer.h b/lib/legacy/libknot/processing/layer.h
deleted file mode 100644
index dec48bf3fecd618b8220ce5e1ae6bb2927073d87..0000000000000000000000000000000000000000
--- a/lib/legacy/libknot/processing/layer.h
+++ /dev/null
@@ -1,59 +0,0 @@
-/*  Copyright (C) 2016 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
-
-    This program is free software: you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation, either version 3 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#pragma once
-
-/* Processing API has been removed from libknot in latest versions. */
-
-#include <libknot/packet/pkt.h>
-#include <libknot/mm_ctx.h>
-
-/*! Layer processing states.
- *  Each state represents the state machine transition,
- *  and determines readiness for the next action.
- */
-enum knot_layer_state {
-	KNOT_STATE_NOOP    = 0,      /*!< N/A */
-	KNOT_STATE_CONSUME = 1 << 0, /*!< Consume data. */
-	KNOT_STATE_PRODUCE = 1 << 1, /*!< Produce data. */
-	KNOT_STATE_DONE    = 1 << 2, /*!< Finished. */
-	KNOT_STATE_FAIL    = 1 << 3  /*!< Error. */
-};
-
-struct knot_layer_api;
-typedef struct knot_layer_api knot_layer_api_t;
-
-struct knot_layer;
-typedef struct knot_layer knot_layer_t;
-
-/*! \brief Packet processing context. */
-struct knot_layer {
-	knot_mm_t *mm;   /* Processing memory context. */
-	int state;       /* Bitmap of enum knot_layer_state. */
-	void *data;      /* Module specific. */
-	const struct knot_layer_api *api;
-};
-
-/*! \brief Packet processing module API. */
-struct knot_layer_api {
-	int (*begin)(knot_layer_t *ctx, void *module_param);
-	int (*reset)(knot_layer_t *ctx);
-	int (*finish)(knot_layer_t *ctx);
-	int (*consume)(knot_layer_t *ctx, knot_pkt_t *pkt);
-	int (*produce)(knot_layer_t *ctx, knot_pkt_t *pkt);
-	int (*fail)(knot_layer_t *ctx, knot_pkt_t *pkt);
-	void *data;
-};
diff --git a/lib/rplan.c b/lib/rplan.c
index cff753af5ef8057aac05f4af9017407d7bf911b5..f5d050e80cb722dff247367c61cea4c912655d4a 100644
--- a/lib/rplan.c
+++ b/lib/rplan.c
@@ -17,7 +17,6 @@
 #include <libknot/descriptor.h>
 #include <libknot/errcode.h>
 
-#include "lib/legacy/libknot/processing/layer.h"
 #include "lib/rplan.h"
 #include "lib/resolve.h"
 #include "lib/cache.h"
diff --git a/modules/cookies/cookiemonster.c b/modules/cookies/cookiemonster.c
index 0f4d70eaf7f6c7853359561ff055ae24a7c83921..bb6793502f1b0f588880c7785bfed0e6cfaa27ee 100644
--- a/modules/cookies/cookiemonster.c
+++ b/modules/cookies/cookiemonster.c
@@ -28,6 +28,8 @@
 #include "lib/cookies/helper.h"
 #include "lib/cookies/lru_cache.h"
 #include "lib/cookies/nonce.h"
+#include "lib/resolve.h"
+#include "lib/rplan.h"
 #include "modules/cookies/cookiemonster.h"
 
 #define DEBUG_MSG(qry, fmt...) QRDEBUG(qry, "cookies",  fmt)