diff --git a/lib/dtrace.js b/lib/dtrace.js
index <HASH>..<HASH> 100644
--- a/lib/dtrace.js
+++ b/lib/dtrace.js
@@ -27,6 +27,7 @@ function addProbes(dtrace, name) {
                                      'char *',
                                      'int',
                                      'char *',
+                                     'int',
                                      'int');
 
         // id, requestid, statusCode, content-type, content-length,
@@ -38,7 +39,6 @@ function addProbes(dtrace, name) {
                                     'char *',
                                     'int',
                                     'int',
-                                    'char *',
                                     'char *');
 
         obj.start = function fireProbeStart(req) {
Different number of probe arguments defined than fired.