diff --git a/tests/netns.sh b/tests/netns.sh
index 6c47a44..02d428b 100755
--- a/tests/netns.sh
+++ b/tests/netns.sh
@@ -80,11 +80,11 @@ pp ip netns add $netns2
 ip0 link set up dev lo
 
 # ip0 link add dev wg1 type wireguard
-n0 $program -f wg1 &
+n0 $program wg1
 ip0 link set wg1 netns $netns1
 
 # ip0 link add dev wg1 type wireguard
-n0 $program -f wg2 &
+n0 $program wg2
 ip0 link set wg2 netns $netns2
 
 key1="$(pp wg genkey)"