diff --git a/config/sample-config2.yaml b/config/sample-config2.yaml
index 22e0ff9..0e2b10b 100644
--- a/config/sample-config2.yaml
+++ b/config/sample-config2.yaml
@@ -21,6 +21,8 @@ ldap_users:
   filter: (&(objectClass=person)(objectClass=organizationalPerson)(givenName=*)(sn=*)(sAMAccountName=*))
   # this attribute is used as PG role name
   name_attribute: sAMAccountName
+  # lowercase name for use as PG role name
+  lowercase_name: true
 
 # Search parameters for LDAP groups which should be synchronized
 ldap_groups:
@@ -28,6 +30,8 @@ ldap_groups:
   filter: (cn=company.*)
   # this attribute is used as PG role name
   name_attribute: cn
+  # lowercase name for use as PG role name
+  lowercase_name: false
   # this attribute must reference to all member DN's of the given group
   member_attribute: member
 
diff --git a/config/schema.yaml b/config/schema.yaml
index 417053f..29fc256 100644
--- a/config/schema.yaml
+++ b/config/schema.yaml
@@ -17,6 +17,9 @@ mapping:
       "name_attribute":
         type: str
         required:  yes
+      "lowercase_name":
+        type: bool
+        required:  no
 
   "ldap_groups":
     type: map
@@ -31,6 +34,9 @@ mapping:
       "name_attribute":
         type: str
         required:  yes
+      "lowercase_name":
+        type: bool
+        required:  no
       "member_attribute":
         type: str
         required:  yes
diff --git a/lib/pg_ldap_sync/application.rb b/lib/pg_ldap_sync/application.rb
index cab9e2b..b0136bd 100644
--- a/lib/pg_ldap_sync/application.rb
+++ b/lib/pg_ldap_sync/application.rb
@@ -85,6 +85,7 @@ class Application
         log.warn "user attribute #{ldap_user_conf[:name_attribute].inspect} not defined for #{entry.dn}"
         next
       end
+      name.downcase! if ldap_user_conf[:lowercase_name]
 
       log.info "found user-dn: #{entry.dn}"
       user = LdapRole.new name, entry.dn
@@ -111,6 +112,7 @@ class Application
         log.warn "user attribute #{ldap_group_conf[:name_attribute].inspect} not defined for #{entry.dn}"
         next
       end
+      name.downcase! if ldap_group_conf[:lowercase_name]
 
       log.info "found group-dn: #{entry.dn}"
       group = LdapRole.new name, entry.dn, entry[ldap_group_conf[:member_attribute]]