diff --git a/proxstar/ldapdb.py b/proxstar/ldapdb.py
index 609d61c..a0135fa 100644
--- a/proxstar/ldapdb.py
+++ b/proxstar/ldapdb.py
@@ -14,25 +14,25 @@ def connect_ldap():
     return ldap
 
 
-@lru_cache(maxsize=128)
+@lru_cache(maxsize=32)
 def is_rtp(user):
     rtp_group = ldap_conn.get_group('rtp')
     return rtp_group.check_member(ldap_conn.get_member(user, uid=True))
 
 
-@lru_cache(maxsize=128)
+@lru_cache(maxsize=32)
 def is_active(user):
     active_group = ldap_conn.get_group('active')
     return active_group.check_member(ldap_conn.get_member(user, uid=True))
 
 
-@lru_cache(maxsize=128)
+@lru_cache(maxsize=32)
 def is_current_student(user):
     current_student_group = ldap_conn.get_group('current_student')
     return current_student_group.check_member(ldap_conn.get_member(user, uid=True))
 
 
-@lru_cache(maxsize=128)
+@lru_cache(maxsize=32)
 def is_user(user):
     try:
         ldap_conn.get_member(user, uid=True)