diff --git a/common.go b/common.go
index e9b03ed..7836e5e 100644
--- a/common.go
+++ b/common.go
@@ -18,22 +18,6 @@ import (
 	"strings"
 )
 
-// Pulled from http://man7.org/linux/man-pages/man7/rtnetlink.7.html
-// See the section on RTM_NEWROUTE, specifically 'struct rtmsg'.
-type routeInfoInMemory struct {
-	Family byte
-	DstLen byte
-	SrcLen byte
-	TOS    byte
-
-	Table    byte
-	Protocol byte
-	Scope    byte
-	Type     byte
-
-	Flags uint32
-}
-
 // rtInfo contains information on a single route.
 type rtInfo struct {
 	Src, Dst         *net.IPNet
diff --git a/netroute_bsd.go b/netroute_bsd.go
index 76ce8db..c3d9d1c 100644
--- a/netroute_bsd.go
+++ b/netroute_bsd.go
@@ -69,10 +69,10 @@ func New() (routing.Router, error) {
 		routeInfo := new(rtInfo)
 
 		if m.Version < 3 || m.Version > 5 {
-			return nil, fmt.Errorf("Unexpected RIB message version: %d", m.Version)
+			return nil, fmt.Errorf("unexpected RIB message version: %d", m.Version)
 		}
 		if m.Type != 4 /* RTM_GET */ {
-			return nil, fmt.Errorf("Unexpected RIB message type: %d", m.Type)
+			return nil, fmt.Errorf("unexpected RIB message type: %d", m.Type)
 		}
 
 		if m.Flags&RTF_UP == 0 ||
@@ -95,7 +95,7 @@ func New() (routing.Router, error) {
 			}
 			routeInfo.Dst = ipn
 		} else {
-			return nil, fmt.Errorf("Unexpected RIB destination: %v", err)
+			return nil, fmt.Errorf("unexpected RIB destination: %v", err)
 		}
 
 		if m.Flags&RTF_GATEWAY != 0 {
diff --git a/netroute_linux.go b/netroute_linux.go
index 203f285..a83815d 100644
--- a/netroute_linux.go
+++ b/netroute_linux.go
@@ -20,6 +20,22 @@ import (
 	"github.com/google/gopacket/routing"
 )
 
+// Pulled from http://man7.org/linux/man-pages/man7/rtnetlink.7.html
+// See the section on RTM_NEWROUTE, specifically 'struct rtmsg'.
+type routeInfoInMemory struct {
+	Family byte
+	DstLen byte
+	SrcLen byte
+	TOS    byte
+
+	Table    byte
+	Protocol byte
+	Scope    byte
+	Type     byte
+
+	Flags uint32
+}
+
 func New() (routing.Router, error) {
 	rtr := &router{}
 	rtr.ifaces = make(map[int]net.Interface)