diff --git a/package.use/all b/package.use/all
index 0ae46de..2ace4d5 100644
--- a/package.use/all
+++ b/package.use/all
@@ -166,6 +166,7 @@ net-analyzer/net-snmp pci perl python lm_sensors
 net-analyzer/nmap -gtk
 net-analyzer/rrdtool -tcl graph
 net-analyzer/tcpdump -samba -chroot
+net-analyzer/tcpflow PYTHON_SINGLE_TARGET: python2_7
 net-analyzer/wireshark gtk3 qt4
 net-analyzer/zabbix agent frontend openipmi proxy server snmp ssh -postgres
 net-dialup/ppp -gtk radius