diff --git a/types/vote_set.go b/types/vote_set.go
index becc6bd6b..6d83ac85d 100644
--- a/types/vote_set.go
+++ b/types/vote_set.go
@@ -70,7 +70,7 @@ type VoteSet struct {
 	peerMaj23s    map[string]BlockID     // Maj23 for each peer
 }
 
-// NewVoteSet instantiates all fields of a new vote set. This constructor required
+// NewVoteSet instantiates all fields of a new vote set. This constructor requires
 // that no vote extension data be present on the votes that are added to the set.
 func NewVoteSet(chainID string, height int64, round int32,
 	signedMsgType tmproto.SignedMsgType, valSet *ValidatorSet) *VoteSet {