diff --git a/disassembler.c b/disassembler.c
index fb9d042..07b2b12 100644
--- a/disassembler.c
+++ b/disassembler.c
@@ -257,8 +257,11 @@
                     }
                     break;
                 case TRANSMITDISCARD_EXT_OPCODE:
-                    print_opcode("trans");
-                    bprintf("r%d", reg_num);
+                    if (reg_num == 0) {
+                        print_opcode("discard");
+                    } else  {
+                        print_opcode("transmit");
+                    }
                     break;
                 case EWRITE1_EXT_OPCODE:
                 case EWRITE2_EXT_OPCODE: