diff --git a/src/proxy/models.py b/src/proxy/models.py
index f81d07d..5d4ef3d 100644
--- a/src/proxy/models.py
+++ b/src/proxy/models.py
@@ -166,12 +166,14 @@ def change_session_attribute_email(sender, instance, **kwargs):
     cursor.execute(("INSERT INTO session_attribute "
                     "(sid, authenticated,  name, value) "
                     "SELECT %s, '1', 'email', %s WHERE NOT EXISTS "
-                    "(SELECT 1 FROM session_attribute WHERE sid=%s)"),
+                    "(SELECT 1 FROM session_attribute WHERE sid=%s "
+                    "AND name='email')"),
                     [instance.username, instance.email, instance.username])
 
     cursor.execute(("INSERT INTO session_attribute "
                     "(sid, authenticated, name, value) "
                     "SELECT %s, '1', 'name', %s WHERE NOT EXISTS "
-                    "(SELECT 1 FROM session_attribute WHERE sid=%s)"),
+                    "(SELECT 1 FROM session_attribute WHERE sid=%s "
+                    "AND name='name')"),
                     [instance.username, instance.get_full_name(),
                      instance.username])
--
libgit2 0.21.2