diff --git a/test/TEST-13-NSPAWN/test.sh b/test/TEST-13-NSPAWN/test.sh
index 47862f1dc2..2e94156432 100755
--- a/test/TEST-13-NSPAWN/test.sh
+++ b/test/TEST-13-NSPAWN/test.sh
@@ -30,7 +30,8 @@ test_append_files() {
         seq \
         sleep \
         stat \
-        touch
+        touch \
+        true
 
     cp /etc/os-release "$container/usr/lib/os-release"
     cat >"$container/sbin/init" <<EOF
diff --git a/test/units/testsuite-13.nspawn.sh b/test/units/testsuite-13.nspawn.sh
index bcade545e8..37629a706a 100755
--- a/test/units/testsuite-13.nspawn.sh
+++ b/test/units/testsuite-13.nspawn.sh
@@ -213,6 +213,20 @@ EOF
     test ! -e "$tmpdir/3/nope"
     rm -fr "$tmpdir"
 
+    # --port (sanity only)
+    systemd-nspawn --network-veth --directory="$root" --port=80 --port=90 true
+    systemd-nspawn --network-veth --directory="$root" --port=80:8080 true
+    systemd-nspawn --network-veth --directory="$root" --port=tcp:80 true
+    systemd-nspawn --network-veth --directory="$root" --port=tcp:80:8080 true
+    systemd-nspawn --network-veth --directory="$root" --port=udp:80 true
+    systemd-nspawn --network-veth --directory="$root" --port=udp:80:8080 --port=tcp:80:8080 true
+    (! systemd-nspawn --network-veth --directory="$root" --port= true)
+    (! systemd-nspawn --network-veth --directory="$root" --port=-1 true)
+    (! systemd-nspawn --network-veth --directory="$root" --port=: true)
+    (! systemd-nspawn --network-veth --directory="$root" --port=icmp:80:8080 true)
+    (! systemd-nspawn --network-veth --directory="$root" --port=tcp::8080 true)
+    (! systemd-nspawn --network-veth --directory="$root" --port=8080: true)
+
     # Assorted tests
     systemd-nspawn --directory="$root" --suppress-sync=yes bash -xec 'echo hello'
     systemd-nspawn --capability=help