diff --git a/tools/testing/selftests/net/mptcp/simult_flows.sh b/tools/testing/selftests/net/mptcp/simult_flows.sh
index 0d88225daa02..2f649b431456 100755
--- a/tools/testing/selftests/net/mptcp/simult_flows.sh
+++ b/tools/testing/selftests/net/mptcp/simult_flows.sh
@@ -200,9 +200,9 @@ do_transfer()
 
 	echo " [ fail ]"
 	echo "client exit code $retc, server $rets" 1>&2
-	echo "\nnetns ${ns3} socket stat for $port:" 1>&2
+	echo -e "\nnetns ${ns3} socket stat for $port:" 1>&2
 	ip netns exec ${ns3} ss -nita 1>&2 -o "sport = :$port"
-	echo "\nnetns ${ns1} socket stat for $port:" 1>&2
+	echo -e "\nnetns ${ns1} socket stat for $port:" 1>&2
 	ip netns exec ${ns1} ss -nita 1>&2 -o "dport = :$port"
 	ls -l $sin $cout
 	ls -l $cin $sout