diff --git a/tools/testing/selftests/net/in_netns.sh b/tools/testing/selftests/net/in_netns.sh
index f57a2eaad069..88795b510b32 100755
--- a/tools/testing/selftests/net/in_netns.sh
+++ b/tools/testing/selftests/net/in_netns.sh
@@ -19,5 +19,5 @@ cleanup() {
 trap cleanup EXIT
 setup
 
-"$@"
+ip netns exec "${NETNS}" "$@"
 exit "$?"