diff --git a/src/yunohost/tools.py b/src/yunohost/tools.py
index 92ed086bf..915b63940 100644
--- a/src/yunohost/tools.py
+++ b/src/yunohost/tools.py
@@ -725,9 +725,14 @@ def _check_if_vulnerable_to_meltdown():
         call = subprocess.Popen("bash %s --batch json --variant 3" %
                                 SCRIPT_PATH, shell=True,
                                 stdout=subprocess.PIPE,
-                                stderr=subprocess.STDOUT)
+                                stderr=subprocess.PIPE)
 
-        output, _ = call.communicate()
+        # TODO / FIXME : here we are ignoring error messages ...
+        # in particular on RPi2 and other hardware, the script complains about
+        # "missing some kernel info (see -v), accuracy might be reduced"
+        # Dunno what to do about that but we probably don't want to harass
+        # users with this warning ...
+        output, err = call.communicate()
         assert call.returncode in (0, 2, 3), "Return code: %s" % call.returncode
 
         CVEs = json.loads(output)