diff --git a/nix/disassembler.cpp b/nix/disassembler.cpp
index edeec08..db29676 100755
--- a/nix/disassembler.cpp
+++ b/nix/disassembler.cpp
@@ -133,6 +133,7 @@ uint8_t Disassembler::instructionToMnemonic(uint16_t addr, uint8_t *p, char *out
   addrmode amode = opcodes[*p].mode;
   uint16_t target = 0;
   char arg[40] = "\0";
+  char bytes[10] = "\0";
 
   switch (amode) {
   case A_REL:
@@ -153,14 +154,19 @@ uint8_t Disassembler::instructionToMnemonic(uint16_t addr, uint8_t *p, char *out
   switch (instructionBytes(*p)) {
   case 1:
     // no arguments
+    sprintf(bytes, "      %.2X ", *(uint8_t *)p);
     break;
   case 2:
+    sprintf(arg, "%s$%X%s", om.prefix, target, om.suffix);
+    sprintf(bytes, "   %.2X %.2X ", *(uint8_t *)p, *(uint8_t *)(p+1));
+    break;
   case 3:
     sprintf(arg, "%s$%X%s", om.prefix, target, om.suffix);
+    sprintf(bytes, "%.2X %.2X %.2X ", *(uint8_t *)p, *(uint8_t *)(p+1), *(uint8_t *)(p+2));
     break;
   }
    
-  sprintf(outp, "$%.4X   %s    %s", addr, mn, arg);
+  sprintf(outp, "$%.4X %s  %s    %s", addr, bytes, mn, arg);
 
   return instructionBytes(*p);
 }