diff --git a/configure.d/1_block_pc.conf b/configure.d/1_block_pc.conf
index d12e27e..9b8d939 100644
--- a/configure.d/1_block_pc.conf
+++ b/configure.d/1_block_pc.conf
@@ -20,11 +20,22 @@ check() {
 apply() {
     case "$1" in
     "1")
-		add_define "cas_blk_rq_set_block_pc(rq) \\
-			blk_rq_set_block_pc(rq)" ;;
+		add_function "
+        static inline void cas_blk_rq_set_block_pc(struct request *rq)
+        {
+			blk_rq_set_block_pc(rq);
+        }" ;;
     "2")
-		add_define "cas_blk_rq_set_block_pc(rq) \\
-			{}" ;;
+		add_function "
+        #include <linux/blk-mq.h>
+        #include <scsi/scsi_request.h>
+        #include <scsi/scsi_cmnd.h>
+        static inline void cas_blk_rq_set_block_pc(struct request *rq)
+        {
+            struct scsi_cmnd *cmd = blk_mq_rq_to_pdu(rq);
+
+            scsi_req_init(&cmd->req);
+        }" ;;
     *)
         exit 1
     esac