diff --git a/tests/test_apt_proxy.py b/tests/test_apt_proxy.py
index 6be5d67194e5ef1228e1b735225a012b1e4fc5f8..6152f5308e244e5a50b466b01fc951ed66050f10 100755
--- a/tests/test_apt_proxy.py
+++ b/tests/test_apt_proxy.py
@@ -33,7 +33,7 @@ for s in conf_servers:
     try:
         url = "https://%s/old-releases.ubuntu.com/ubuntu/dists/lucid/Release.gpg" % v
         print('Checking url certificate %s' % url)
-        d = requests.get(url, verify=False)
+        d = requests.get(url, verify=False).text
         if not "BEGIN PGP SIGNATURE" in d:
             all_ok = False
             print('Unexpected content: %s' % d)