diff --git a/src/engine/engine_d2c.c b/src/engine/engine_d2c.c
index 9f7351a..16cf800 100644
--- a/src/engine/engine_d2c.c
+++ b/src/engine/engine_d2c.c
@@ -1,5 +1,5 @@
 /*
- * Copyright(c) 2012-2021 Intel Corporation
+ * Copyright(c) 2012-2022 Intel Corporation
  * SPDX-License-Identifier: BSD-3-Clause
  */
 #include "ocf/ocf.h"
@@ -38,7 +38,6 @@ int ocf_io_d2c(struct ocf_request *req)
 
 	OCF_DEBUG_TRACE(req->cache);
 
-	ocf_io_start(&req->ioi.io);
 
 	/* Get OCF request - increase reference counter */
 	ocf_req_get(req);
diff --git a/src/engine/engine_discard.c b/src/engine/engine_discard.c
index 3860386..d3788ff 100644
--- a/src/engine/engine_discard.c
+++ b/src/engine/engine_discard.c
@@ -243,7 +243,6 @@ int ocf_discard(struct ocf_request *req)
 {
 	OCF_DEBUG_TRACE(req->cache);
 
-	ocf_io_start(&req->ioi.io);
 
 	if (req->rw == OCF_READ) {
 		req->complete(req, -OCF_ERR_INVAL);
diff --git a/src/engine/engine_fast.c b/src/engine/engine_fast.c
index 91822f8..fc7e608 100644
--- a/src/engine/engine_fast.c
+++ b/src/engine/engine_fast.c
@@ -125,7 +125,6 @@ int ocf_read_fast(struct ocf_request *req)
 	part_has_space = ocf_user_part_has_space(req);
 
 	if (hit && part_has_space) {
-		ocf_io_start(&req->ioi.io);
 		lock = ocf_req_async_lock_rd(
 				ocf_cache_line_concurrency(req->cache),
 				req, ocf_engine_on_resume);
@@ -192,7 +191,6 @@ int ocf_write_fast(struct ocf_request *req)
 	part_has_space = ocf_user_part_has_space(req);
 
 	if (mapped && part_has_space) {
-		ocf_io_start(&req->ioi.io);
 		lock = ocf_req_async_lock_wr(
 				ocf_cache_line_concurrency(req->cache),
 				req, ocf_engine_on_resume);
diff --git a/src/engine/engine_pt.c b/src/engine/engine_pt.c
index 8c5706d..d49faa9 100644
--- a/src/engine/engine_pt.c
+++ b/src/engine/engine_pt.c
@@ -102,7 +102,6 @@ int ocf_read_pt(struct ocf_request *req)
 
 	OCF_DEBUG_TRACE(req->cache);
 
-	ocf_io_start(&req->ioi.io);
 
 	/* Get OCF request - increase reference counter */
 	ocf_req_get(req);
diff --git a/src/engine/engine_rd.c b/src/engine/engine_rd.c
index 7d07dd0..52fd4d3 100644
--- a/src/engine/engine_rd.c
+++ b/src/engine/engine_rd.c
@@ -214,7 +214,6 @@ int ocf_read_generic(struct ocf_request *req)
 	int lock = OCF_LOCK_NOT_ACQUIRED;
 	struct ocf_cache *cache = req->cache;
 
-	ocf_io_start(&req->ioi.io);
 
 	if (env_atomic_read(&cache->pending_read_misses_list_blocked)) {
 		/* There are conditions to bypass IO */
diff --git a/src/engine/engine_wa.c b/src/engine/engine_wa.c
index 2e68a0b..cb72d0e 100644
--- a/src/engine/engine_wa.c
+++ b/src/engine/engine_wa.c
@@ -18,7 +18,6 @@
 
 int ocf_write_wa(struct ocf_request *req)
 {
-	ocf_io_start(&req->ioi.io);
 
 	/* Get OCF request - increase reference counter */
 	ocf_req_get(req);
diff --git a/src/engine/engine_wb.c b/src/engine/engine_wb.c
index 15574ae..9343360 100644
--- a/src/engine/engine_wb.c
+++ b/src/engine/engine_wb.c
@@ -167,7 +167,6 @@ int ocf_write_wb(struct ocf_request *req)
 {
 	int lock = OCF_LOCK_NOT_ACQUIRED;
 
-	ocf_io_start(&req->ioi.io);
 
 	/* Not sure if we need this. */
 	ocf_req_get(req);
diff --git a/src/engine/engine_wi.c b/src/engine/engine_wi.c
index bc6def5..f5076d2 100644
--- a/src/engine/engine_wi.c
+++ b/src/engine/engine_wi.c
@@ -163,7 +163,6 @@ int ocf_write_wi(struct ocf_request *req)
 
 	OCF_DEBUG_TRACE(req->cache);
 
-	ocf_io_start(&req->ioi.io);
 
 	/* Get OCF request - increase reference counter */
 	ocf_req_get(req);
diff --git a/src/engine/engine_wo.c b/src/engine/engine_wo.c
index df056bf..513f747 100644
--- a/src/engine/engine_wo.c
+++ b/src/engine/engine_wo.c
@@ -207,7 +207,6 @@ int ocf_read_wo(struct ocf_request *req)
 
 	OCF_DEBUG_TRACE(req->cache);
 
-	ocf_io_start(&req->ioi.io);
 
 	/* Get OCF request - increase reference counter */
 	ocf_req_get(req);
diff --git a/src/engine/engine_wt.c b/src/engine/engine_wt.c
index c824999..95a2321 100644
--- a/src/engine/engine_wt.c
+++ b/src/engine/engine_wt.c
@@ -201,7 +201,6 @@ int ocf_write_wt(struct ocf_request *req)
 {
 	int lock = OCF_LOCK_NOT_ACQUIRED;
 
-	ocf_io_start(&req->ioi.io);
 
 	/* Get OCF request - increase reference counter */
 	ocf_req_get(req);
diff --git a/src/ocf_io_priv.h b/src/ocf_io_priv.h
index b26d5dd..1d56b6f 100644
--- a/src/ocf_io_priv.h
+++ b/src/ocf_io_priv.h
@@ -46,17 +46,6 @@ struct ocf_io *ocf_io_new(ocf_volume_t volume, ocf_queue_t queue,
 		uint64_t addr, uint32_t bytes, uint32_t dir,
 		uint32_t io_class, uint64_t flags);
 
-static inline void ocf_io_start(struct ocf_io *io)
-{
-	/*
-	 * We want to call start() callback only once, so after calling
-	 * we set it to NULL to prevent multiple calls.
-	 */
-	if (io->start) {
-		io->start(io);
-		io->start = NULL;
-	}
-}
 
 static inline void ocf_io_end(struct ocf_io *io, int error)
 {