diff --git a/sys/conf/NOTES b/sys/conf/NOTES
index 4280d477bcb..cdeee4eb7fd 100644
--- a/sys/conf/NOTES
+++ b/sys/conf/NOTES
@@ -2803,7 +2803,7 @@ options 	MAXFILES=999
 options 	RANDOM_ENABLE_UMA	# slab allocator
 
 # Select this to allow high-rate but potentially expensive
-# harvesting of of the m_next pointer in the mbuf. Note that
+# harvesting of the m_next pointer in the mbuf. Note that
 # the m_next pointer is NULL except when receiving > 4K
 # jumbo frames or sustained bursts by way of LRO. Thus in
 # the common case it is stirring zero in to the entropy