diff --git a/test/test-network/systemd-networkd-tests.py b/test/test-network/systemd-networkd-tests.py
index 2207f36245a..101a896459a 100755
--- a/test/test-network/systemd-networkd-tests.py
+++ b/test/test-network/systemd-networkd-tests.py
@@ -176,7 +176,7 @@ def expectedFailureIfAlternativeNameIsNotAvailable():
         call('ip link add dummy98 type dummy', stderr=subprocess.DEVNULL)
         rc = call('ip link prop add dev dummy98 altname hogehogehogehogehoge', stderr=subprocess.DEVNULL)
         if rc == 0:
-            rc = call('ip link show dev hogehogehogehogehoge', stderr=subprocess.DEVNULL)
+            rc = call('ip link show dev hogehogehogehogehoge', stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
             if rc == 0:
                 supported = True