diff -uNr ethereal-0.10.0a/packet-enip.c my-dir/packet-enip.c
--- ethereal-0.10.0a/packet-enip.c	2004-01-29 07:21:57.000000000 -0600
+++ my-dir/packet-enip.c	2004-01-29 07:20:39.000000000 -0600
@@ -2115,10 +2115,6 @@
 
          switch( encap_cmd )
          {
-            case NOP:
-               show_cdf( encap_cmd, tvb, pinfo, csftree, 24 );
-               break;
-
             case LIST_SERVICES:
                show_cdf( encap_cmd, tvb, pinfo, csftree, 24 );
                break;
@@ -2153,6 +2149,7 @@
                show_cdf( encap_cmd, tvb, pinfo, csftree, 30 );
                break;
 
+            case NOP:
             case INDICATE_STATUS:
             case CANCEL:
             default: