diff --git a/probe/endpoint/dns_snooper_linux_amd64.go b/probe/endpoint/dns_snooper_linux_amd64.go
index 11f5ce6b81..e4750d16c5 100644
--- a/probe/endpoint/dns_snooper_linux_amd64.go
+++ b/probe/endpoint/dns_snooper_linux_amd64.go
@@ -43,7 +43,6 @@ func NewDNSSnooper() (*DNSSnooper, error) {
 }
 
 func newPcapHandle() (*pcap.Handle, error) {
-	// TODO: use specific interfaces instead?
 	inactive, err := pcap.NewInactiveHandle("any")
 	if err != nil {
 		return nil, err
@@ -52,11 +51,6 @@ func newPcapHandle() (*pcap.Handle, error) {
 	if err = inactive.SetPromisc(true); err != nil {
 		return nil, err
 	}
-	// TODO: reduce the size of packets being copied? maybe an overoptimization
-	// if err = inactive.SetSnapLen(snaplen); err != nil {
-	//	return
-	// }
-
 	// pcap timeout blackmagic copied from Weave Net to reduce CPU consumption
 	// see https://github.com/weaveworks/weave/commit/025315363d5ea8b8265f1b3ea800f24df2be51a4
 	if err = inactive.SetTimeout(time.Duration(math.MaxInt64)); err != nil {
@@ -132,7 +126,7 @@ func (s *DNSSnooper) run() {
 		sll           layers.LinuxSLL
 	)
 
-	// assumes that the "any" interface in being used (see https://wiki.wireshark.org/SLL)
+	// assumes that the "any" interface is being used (see https://wiki.wireshark.org/SLL)
 	packetParser := gopacket.NewDecodingLayerParser(layers.LayerTypeLinuxSLL, &sll, &eth, &ip4, &ip6, &udp, &tcp, &dns)
 
 	for {
diff --git a/prog/probe.go b/prog/probe.go
index c3ba714963..65f52ed5d3 100644
--- a/prog/probe.go
+++ b/prog/probe.go
@@ -145,10 +145,9 @@ func probeMain(flags probeFlags) {
 		p.AddReporter(process.NewReporter(processCache, hostID, process.GetDeltaTotalJiffies))
 	}
 
-	// TODO: make the snooper optional
 	dnsSnooper, err := endpoint.NewDNSSnooper()
 	if err != nil {
-		log.Errorf("Fail to start DNS snooper: nodes for external services will be less accurate: %s", err)
+		log.Errorf("Failed to start DNS snooper: nodes for external services will be less accurate: %s", err)
 	} else {
 		defer dnsSnooper.Stop()
 	}