diff --git a/src/intel/compiler/brw_disasm.c b/src/intel/compiler/brw_disasm.c
index 02a43817aa9..d8c0e97c967 100644
--- a/src/intel/compiler/brw_disasm.c
+++ b/src/intel/compiler/brw_disasm.c
@@ -2537,7 +2537,11 @@ brw_disassemble_inst(FILE *file, const struct brw_isa_info *isa,
             }
             format(file, " dst_len = %u,", lsc_msg_desc_dest_len(devinfo, imm_desc));
             format(file, " src0_len = %u,", lsc_msg_desc_src0_len(devinfo, imm_desc));
-            format(file, " src1_len = %d", brw_message_ex_desc_ex_mlen(devinfo, imm_ex_desc));
+
+            if (!brw_inst_send_sel_reg32_ex_desc(devinfo, inst))
+               format(file, " src1_len = %d",
+                      brw_message_ex_desc_ex_mlen(devinfo, imm_ex_desc));
+
             err |= control(file, "address_type", lsc_addr_surface_type,
                            lsc_msg_desc_addr_type(devinfo, imm_desc), &space);
             format(file, " )");
@@ -2672,8 +2676,14 @@ brw_disassemble_inst(FILE *file, const struct brw_isa_info *isa,
          if (space)
             string(file, " ");
       }
-      if (devinfo->verx10 >= 125 && brw_inst_send_ex_bso(devinfo, inst))
+      if (devinfo->verx10 >= 125 &&
+          brw_inst_send_sel_reg32_ex_desc(devinfo, inst) &&
+          brw_inst_send_ex_bso(devinfo, inst)) {
+         format(file, " src1_len = %u",
+                (unsigned) brw_inst_send_src1_len(devinfo, inst));
+
          format(file, " ex_bso");
+      }
       if (brw_sfid_is_lsc(sfid)) {
             lsc_disassemble_ex_desc(devinfo, imm_desc, imm_ex_desc, file);
       } else {