--- openflow-2011-08-31-5.h	2015-07-23 09:54:16.608479340 -0700
+++ openflow-2011-09-02.h	2015-07-23 09:54:16.612479340 -0700
@@ -610,7 +610,7 @@
  */
 enum ofp_match_type {
     OFPMT_STANDARD,           /* Deprecated. */
-    OFPMT_OXM,		      /* OpenFlow Extensible Match */
+    OFPMT_OXM,                /* OpenFlow Extensible Match */
 };
 
 /* Fields to match against flows */