diff --git a/src/backend/tpl/idma_backend.sv.tpl b/src/backend/tpl/idma_backend.sv.tpl
index 9279a91c..a077ba20 100644
--- a/src/backend/tpl/idma_backend.sv.tpl
+++ b/src/backend/tpl/idma_backend.sv.tpl
@@ -466,6 +466,7 @@ _rsp_t ${protocol}_write_rsp_i,
 
         // assemble read datapath request
         assign r_req.r_dp_req = '{
+            src_protocol: idma_req_i.opt.src_protocol,
             offset:      idma_req_i.src_addr[OffsetWidth-1:0],
             tailer:      OffsetWidth'(idma_req_i.length + idma_req_i.src_addr[OffsetWidth-1:0]),
             shift:       OffsetWidth'(idma_req_i.src_addr[OffsetWidth-1:0]),
@@ -474,6 +475,7 @@ _rsp_t ${protocol}_write_rsp_i,
 
         // assemble write datapath request
         assign w_req.w_dp_req = '{
+            dst_protocol: idma_req_i.opt.dst_protocol,
             offset:    idma_req_i.dst_addr[OffsetWidth-1:0],
             tailer:    OffsetWidth'(idma_req_i.length + idma_req_i.dst_addr[OffsetWidth-1:0]),
             shift:     OffsetWidth'(- idma_req_i.dst_addr[OffsetWidth-1:0]),