--- openflow-2012-04-12.h	2015-07-23 09:54:17.156479362 -0700
+++ openflow-2012-04-20.h	2015-07-23 09:54:17.160479362 -0700
@@ -1294,7 +1294,7 @@
     OFPM_MAX        = 0xffff0000,
 
     /* Virtual meters. */
-    OFPM_SLOWPATH   = 0xfffffffd,  /* Meter for slow datapath, if any. */
+    OFPM_SLOWPATH   = 0xfffffffd,  /* Meter for slow datapath. */
     OFPM_CONTROLLER = 0xfffffffe,  /* Meter for controller connection. */
     OFPM_ALL        = 0xffffffff,  /* Represents all meters for stat requests
                                       commands. */