diff --git a/mlmmj-ldap-sync b/mlmmj-ldap-sync
index 261b5f1..c114256 100755
--- a/mlmmj-ldap-sync
+++ b/mlmmj-ldap-sync
@@ -108,17 +108,18 @@ def remove_subscriber_from(list_name, list, addr)
   end
 end
 
-def sync_list(list_name, ldap_group_entry, user_basetree)
+def sync_list(list_name, ldap_group_entry, ldap_conn)
   mlmmj_basepath = @configuration['mlmmj']['basepath']
+  user_basetree = @configuration['ldap']['users']['basetree']
   list = "#{mlmmj_basepath}/#{list_name}@#{@configuration['domain']}"
 
   ldap_members = ldap_group_entry.memberuid.map do |uid|
     filter = Net::LDAP::Filter.eq('uid', uid)
-    matched_ldap_users = conn.search(base: user_basetree, filter: filter)
+    matched_ldap_users = ldap_conn.search(base: user_basetree, filter: filter)
     if matched_ldap_users.nil? || matched_ldap_users.empty?
       ""
     else
-      matched_ldap_users.first.mail
+      matched_ldap_users.first.mail.first
     end
   end
 
@@ -149,10 +150,9 @@ def main
   # Parse configuration, bind to LDAP server
   configuration_file = ARGV[0] ? ARGV[0] : @configuration_file
   @configuration = read_configuration(configuration_file)
-  conn = connect_ldap
+  ldap_conn = connect_ldap
 
   domain = @configuration['domain']
-  user_basetree = @configuration['ldap']['user']['basetree']
   list_basetree = @configuration['ldap']['lists']['basetree']
   lists = (@configuration['lists_add'] + @configuration['lists_remove']).uniq
 
@@ -162,14 +162,14 @@ def main
     print 'Searching LDAP... '
 
     filter = Net::LDAP::Filter.eq('cn', list_name)
-    matched_ldap_groups = conn.search(base: list_basetree, filter: filter)
+    matched_ldap_groups = ldap_conn.search(base: list_basetree, filter: filter)
     if matched_ldap_groups.nil? || matched_ldap_groups.empty?
       # Could not find matching LDAP group
       puts 'NOT FOUND'
     else
       puts 'OK'
       ldap_group_entry = matched_ldap_groups.first
-      sync_list(list_name, ldap_group_entry, user_basetree)
+      sync_list(list_name, ldap_group_entry, ldap_conn)
     end
   end
 end