diff --git a/openstack_requirements/cmds/check_conflicts.py b/openstack_requirements/cmds/check_conflicts.py
index e5ec58f932..2e1399fed0 100644
--- a/openstack_requirements/cmds/check_conflicts.py
+++ b/openstack_requirements/cmds/check_conflicts.py
@@ -58,15 +58,15 @@ def main():
                     if req.markers in ["", pyver]:
                         pkg_resources.require(name)
         except pkg_resources.ContextualVersionConflict as e:
-
             if e.dist.key in xfails:
                 xfail_requirement = xfails[e.dist.key][0][0]
                 xfail_blacklists = set(xfail_requirement.markers.split(','))
                 conflict = e.dist.as_requirement()
                 conflict_specifiers = ''.join(conflict.specs[0])
+                conflict_name = conflict.name.lower()
 
                 if (e.required_by.issubset(xfail_blacklists) and
-                        xfail_requirement.package == conflict.name and
+                        xfail_requirement.package == conflict_name and
                         conflict_specifiers == xfail_requirement.specifiers):
 
                     print ('XFAIL while checking conflicts '
diff --git a/upper-constraints-xfails.txt b/upper-constraints-xfails.txt
index 496b15aede..b6d9c5a54d 100644
--- a/upper-constraints-xfails.txt
+++ b/upper-constraints-xfails.txt
@@ -1,2 +1,5 @@
 # Format is
 # <dependency that is incompatible>==<version>;<list,of,affected,packages>
+pyopenssl==17.2.0;mitmproxy
+pyasn1==0.3.3;mitmproxy
+cryptography==2.0.3;mitmproxy