diff --git a/router/ethernet_decoder.go b/router/ethernet_decoder.go
index 2eb1a429..473e2e70 100644
--- a/router/ethernet_decoder.go
+++ b/router/ethernet_decoder.go
@@ -66,7 +66,7 @@ func (dec *EthernetDecoder) makeICMPFragNeeded(mtu int) ([]byte, error) {
 		return nil, err
 	}
 
-	log.Printf("Sending ICMP 3,4 (%v -> %v): PMTU= %v", dec.IP.DstIP, dec.IP.SrcIP, mtu)
+	log.Printf("Sending ICMP 3,4 (%v -> %v): PMTU=%v", dec.IP.DstIP, dec.IP.SrcIP, mtu)
 	return buf.Bytes(), nil
 }
 
diff --git a/router/sleeve.go b/router/sleeve.go
index 36eb9cab..4dd110b0 100644
--- a/router/sleeve.go
+++ b/router/sleeve.go
@@ -463,7 +463,7 @@ func (f curriedForward) Process(frame []byte, dec *EthernetDecoder,
 		// non-broadcast frames can be broadcast, if the
 		// destination MAC was not in our MAC cache.
 		if broadcast {
-			log.Print(fwd.logPrefix(), "dropping too big DF broadcast frame (", dec.IP.DstIP, " -> ", dec.IP.SrcIP, "): MTU=", mtu)
+			log.Print(fwd.logPrefix(), "dropping too big DF broadcast frame (", dec.IP.SrcIP, " -> ", dec.IP.DstIP, "): MTU=", mtu)
 			return
 		}