diff --git a/tests/test_dns_records.py b/tests/test_dns_records.py
index d1ce11efe8e4380a9270733bcc97e745b5b2071f..b55cc1192b85d847c01ffb982a3daf7c7be73f4b 100755
--- a/tests/test_dns_records.py
+++ b/tests/test_dns_records.py
@@ -25,8 +25,7 @@ def get_dns_servers():
     if servers == ['127.0.1.1']:
         # NetworkManager
         status, output = subprocess.getstatusoutput('nmcli -f all device show | grep IP4.DNS | awk \'{ print $2 }\'')
-        for l in output.split('\n'):
-            servers.append(l)
+        servers.extend(output.split('\n'))
     return servers