--- openflow-2013-05-24.h	2015-07-23 09:54:17.312479369 -0700
+++ openflow-2013-05-29.h	2015-07-23 09:54:17.320479369 -0700
@@ -1088,11 +1088,11 @@
 /* Action structure for OFPAT_COPY_TTL_OUT, OFPAT_COPY_TTL_IN,
  * OFPAT_DEC_MPLS_TTL, OFPAT_DEC_NW_TTL, OFPAT_POP_VLAN and OFPAT_POP_PBB. */
 struct ofp_action_generic {
-    uint16_t type;                  /* OFPAT_SET_MPLS_TTL. */
+    uint16_t type;                  /* One of OFPAT_*. */
     uint16_t len;                   /* Length is 8. */
     uint8_t pad[4];                 /* Pad to 64 bits. */
 };
-OFP_ASSERT(sizeof(struct ofp_action_empty) == 8);
+OFP_ASSERT(sizeof(struct ofp_action_generic) == 8);
 
 /* Action structure for OFPAT_SET_MPLS_TTL. */
 struct ofp_action_mpls_ttl {