diff --git a/wgengine/magicsock/magicsock.go b/wgengine/magicsock/magicsock.go
index 3cc6c8ffa..6b125e1f4 100644
--- a/wgengine/magicsock/magicsock.go
+++ b/wgengine/magicsock/magicsock.go
@@ -95,7 +95,7 @@ type peerMap struct {
 	byNodeKey map[tailcfg.NodeKey]*peerInfo
 	byIPPort  map[netaddr.IPPort]*peerInfo
 
-	// nodesOfDisco are contains the set of nodes that are using a
+	// nodesOfDisco contains the set of nodes that are using a
 	// DiscoKey. Usually those sets will be just one node.
 	nodesOfDisco map[tailcfg.DiscoKey]map[tailcfg.NodeKey]bool
 }