diff --git a/tests/auto/network-settings.h b/tests/auto/network-settings.h
index e06744b44e..e46189dd7d 100644
--- a/tests/auto/network-settings.h
+++ b/tests/auto/network-settings.h
@@ -116,6 +116,7 @@ public:
                 return false;
             }
         }
+        ::close(s);
 #endif
         return true;
     }