--- openflow-2012-08-17.h	2015-07-23 09:54:17.188479364 -0700
+++ openflow-2012-08-20.h	2015-07-23 09:54:17.192479364 -0700
@@ -1364,7 +1364,7 @@
     uint16_t        len;     /* Length in bytes of this band. */
     uint32_t        rate;    /* Rate for remarking packets. */
     uint32_t        burst_size; /* Size of bursts. */
-    uint8_t         prec_level; /* Number of drop precendence level to add. */
+    uint8_t         prec_level; /* Number of drop precedence level to add. */
     uint8_t         pad[3];
 };
 OFP_ASSERT(sizeof(struct ofp_meter_band_dscp_remark) == 16);