diff --git a/src/engine/engine_common.c b/src/engine/engine_common.c
index 9a729f9..2bd6544 100644
--- a/src/engine/engine_common.c
+++ b/src/engine/engine_common.c
@@ -95,15 +95,8 @@ void ocf_engine_update_req_info(struct ocf_cache *cache,
 	uint8_t end_sector = ocf_line_end_sector(cache);
 	struct ocf_map_info *_entry = &(req->map[entry]);
 
-	if (entry == 0) {
-		start_sector = BYTES_TO_SECTORS(req->byte_position)
-				% ocf_line_sectors(cache);
-	}
-
-	if (entry == req->core_line_count - 1) {
-		end_sector = BYTES_TO_SECTORS(req->byte_position +
-				req->byte_length - 1)% ocf_line_sectors(cache);
-	}
+	start_sector = ocf_map_line_start_sector(req, entry);
+	end_sector = ocf_map_line_end_sector(req, entry);
 
 	/* Handle return value */
 	switch (_entry->status) {
diff --git a/src/utils/utils_cache_line.h b/src/utils/utils_cache_line.h
index 53f9708..e014df6 100644
--- a/src/utils/utils_cache_line.h
+++ b/src/utils/utils_cache_line.h
@@ -229,6 +229,29 @@ static inline void ocf_purge_map_info(struct ocf_request *req)
 	}
 }
 
+static inline
+uint8_t ocf_map_line_start_sector(struct ocf_request *req, uint32_t line)
+{
+	if (line == 0) {
+		return BYTES_TO_SECTORS(req->byte_position)
+					% ocf_line_sectors(req->cache);
+	}
+
+	return 0;
+}
+
+static inline
+uint8_t ocf_map_line_end_sector(struct ocf_request *req, uint32_t line)
+{
+	if (line == req->core_line_count - 1) {
+		return BYTES_TO_SECTORS(req->byte_position +
+					req->byte_length - 1) %
+					ocf_line_sectors(req->cache);
+	}
+
+	return ocf_line_end_sector(req->cache);
+}
+
 static inline void ocf_set_valid_map_info(struct ocf_request *req)
 {
 	uint32_t map_idx = 0;
@@ -244,27 +267,11 @@ static inline void ocf_set_valid_map_info(struct ocf_request *req)
 	 * | -----+++ | ++++++++ | +++ | ++++++++ | +++++--- |
 	 * |   first  |          Middle           |   last   |
 	 */
-
 	for (map_idx = 0; map_idx < count; map_idx++) {
 		ENV_BUG_ON(map[map_idx].status == LOOKUP_MISS);
 
-		start_bit = 0;
-		end_bit = ocf_line_end_sector(cache);
-
-		if (map_idx == 0) {
-			/* First */
-
-			start_bit = BYTES_TO_SECTORS(req->byte_position)
-					% ocf_line_sectors(cache);
-		}
-
-		if (map_idx == (count - 1)) {
-			/* Last */
-
-			end_bit = BYTES_TO_SECTORS(req->byte_position +
-					req->byte_length - 1)
-					% ocf_line_sectors(cache);
-		}
+		start_bit = ocf_map_line_start_sector(req, map_idx);
+		end_bit = ocf_map_line_end_sector(req, map_idx);
 
 		set_cache_line_valid(cache, start_bit, end_bit, req, map_idx);
 	}
@@ -286,24 +293,8 @@ static inline void ocf_set_dirty_map_info(struct ocf_request *req)
 	 */
 
 	for (map_idx = 0; map_idx < count; map_idx++) {
-		start_bit = 0;
-		end_bit = ocf_line_end_sector(cache);
-
-		if (map_idx == 0) {
-			/* First */
-
-			start_bit = BYTES_TO_SECTORS(req->byte_position)
-					% ocf_line_sectors(cache);
-		}
-
-		if (map_idx == (count - 1)) {
-			/* Last */
-
-			end_bit = BYTES_TO_SECTORS(req->byte_position +
-					req->byte_length - 1) %
-					ocf_line_sectors(cache);
-		}
-
+		start_bit = ocf_map_line_start_sector(req, map_idx);
+		end_bit = ocf_map_line_end_sector(req, map_idx);
 		set_cache_line_dirty(cache, start_bit, end_bit, req, map_idx);
 	}
 }
@@ -324,25 +315,8 @@ static inline void ocf_set_clean_map_info(struct ocf_request *req)
 	 */
 
 	for (map_idx = 0; map_idx < count; map_idx++) {
-		start_bit = 0;
-		end_bit = ocf_line_end_sector(cache);
-
-		if (map_idx == 0) {
-			/* First */
-
-			start_bit = BYTES_TO_SECTORS(req->byte_position)
-					% ocf_line_sectors(cache);
-		}
-
-		if (map_idx == (count - 1)) {
-			/* Last */
-
-			end_bit = BYTES_TO_SECTORS(req->byte_position +
-					req->byte_length - 1) %
-					ocf_line_sectors(cache);
-
-		}
-
+		start_bit = ocf_map_line_start_sector(req, map_idx);
+		end_bit = ocf_map_line_end_sector(req, map_idx);
 		set_cache_line_clean(cache, start_bit, end_bit, req, map_idx);
 	}
 }