Interpolation only works inside double-quote
diff --git a/lib/whimsy/asf/ldap.rb b/lib/whimsy/asf/ldap.rb
index 944ad8d..8fc69fe 100644
--- a/lib/whimsy/asf/ldap.rb
+++ b/lib/whimsy/asf/ldap.rb
@@ -588,9 +588,9 @@
# determine what groups the individual is a member of
uid_groups = ASF.search_subtree('dc=apache,dc=org',
- 'memberUid=#{self.id}', 'dn').flatten
+ "memberUid=#{self.id}", 'dn').flatten
dn_groups = ASF.search_subtree('dc=apache,dc=org',
- 'member=#{self.dn}', 'dn').flatten
+ "member=#{self.dn}", 'dn').flatten
# add new user to all groups
uid_groups.each do |dn|
