diff --git a/system/lib.py b/system/lib.py
index 4355ac94..a68d4cc2 100644
--- a/system/lib.py
+++ b/system/lib.py
@@ -66,6 +66,7 @@ class BaseTest(object):
     configFile = {
         "rootDir": "%s/.aptly" % os.environ["HOME"],
         "downloadConcurrency": 4,
+        "downloadSpeedLimit": 0,
         "architectures": [],
         "dependencyFollowSuggests": False,
         "dependencyFollowRecommends": False,