--- openflow-2014-11-20.h	2015-07-23 09:54:18.056479399 -0700
+++ openflow-2014-12-11.h	2015-07-23 09:54:18.064479399 -0700
@@ -2977,7 +2977,7 @@
      *   - Exactly 'bucket_array_len' bytes containing an array of
      *     struct ofp_bucket.
      *   - Zero or more bytes of group properties to fill out the overall
-     *     length in header.length. */
+     *     length in the length field. */
     struct ofp_bucket buckets[0];   /* List of buckets - 0 or more. */
     //struct ofp_group_prop_header properties[0];
 };