diff --git a/src/main/scala/app/SignInController.scala b/src/main/scala/app/SignInController.scala
index 06f11cc..e238ccf 100644
--- a/src/main/scala/app/SignInController.scala
+++ b/src/main/scala/app/SignInController.scala
@@ -27,9 +27,10 @@
 
   post("/signin", form){ form =>
     val settings = loadSystemSettings()
-    settings.authType match {
-      case "LDAP" => ldapAuthentication(form, settings)
-      case _      => defaultAuthentication(form)
+    if(settings.ldapAuthentication){
+      ldapAuthentication(form, settings)
+    } else {
+      defaultAuthentication(form)
     }
   }
 
diff --git a/src/main/scala/app/SystemSettingsController.scala b/src/main/scala/app/SystemSettingsController.scala
index 60f3700..03df403 100644
--- a/src/main/scala/app/SystemSettingsController.scala
+++ b/src/main/scala/app/SystemSettingsController.scala
@@ -23,8 +23,8 @@
         "password"                 -> trim(label("SMTP Password", optional(text()))),
         "ssl"                      -> trim(label("Enable SSL", optional(boolean())))
     )(Smtp.apply)),
-    "authType"                -> trim(label("Auth Type", text(required))),
-    "ldap"                    -> optional(_.get("authType") == Some("LDAP"), mapping(
+    "ldapAuthentication"      -> trim(label("LDAP", boolean())),
+    "ldap"                    -> optionalIfNotChecked("ldapAuthentication", mapping(
         "host"                    -> trim(label("LDAP host", text(required))),
         "port"                    -> trim(label("LDAP port", number(required))),
         "baseDN"                  -> trim(label("BaseDN", text(required))),
diff --git a/src/main/scala/service/SystemSettingsService.scala b/src/main/scala/service/SystemSettingsService.scala
index d639526..ee83a12 100644
--- a/src/main/scala/service/SystemSettingsService.scala
+++ b/src/main/scala/service/SystemSettingsService.scala
@@ -19,7 +19,8 @@
         smtp.ssl.foreach(x => props.setProperty(SmtpSsl, x.toString))
       }
     }
-    if(settings.authType == "LDAP"){
+    props.setProperty(LdapAuthentication, settings.ldapAuthentication.toString)
+    if(settings.ldapAuthentication){
       settings.ldap.map { ldap =>
         props.setProperty(LdapHost, ldap.host)
         props.setProperty(LdapPort, ldap.port.toString)
@@ -51,14 +52,14 @@
       } else {
         None
       },
-      getValue(props, AuthType, ""),
-      if(getValue(props, AuthType, "") == "LDAP"){
+      getValue(props, LdapAuthentication, false),
+      if(getValue(props, LdapAuthentication, false)){
         Some(Ldap(
           getValue(props, LdapHost, ""),
           getValue(props, LdapPort, 389),
           getValue(props, LdapBaseDN, ""),
           getValue(props, LdapUserNameAttribute, "uid"),
-          getValue(props, LdapUserNameAttribute, "mail")))
+          getValue(props, LdapMailAddressAttribute, "mail")))
       } else {
         None
       }
@@ -75,7 +76,7 @@
     gravatar: Boolean,
     notification: Boolean,
     smtp: Option[Smtp],
-    authType: String,
+    ldapAuthentication: Boolean,
     ldap: Option[Ldap])
 
   case class Ldap(
@@ -94,13 +95,13 @@
 
   private val AllowAccountRegistration = "allow_account_registration"
   private val Gravatar = "gravatar"
-  private val AuthType = "auth_type"
   private val Notification = "notification"
   private val SmtpHost = "smtp.host"
   private val SmtpPort = "smtp.port"
   private val SmtpUser = "smtp.user"
   private val SmtpPassword = "smtp.password"
   private val SmtpSsl = "smtp.ssl"
+  private val LdapAuthentication = "ldap_authentication"
   private val LdapHost = "ldap.host"
   private val LdapPort = "ldap.port"
   private val LdapBaseDN = "ldap.baseDN"
diff --git a/src/main/twirl/admin/system.scala.html b/src/main/twirl/admin/system.scala.html
index 3e77d0e..daebbc7 100644
--- a/src/main/twirl/admin/system.scala.html
+++ b/src/main/twirl/admin/system.scala.html
@@ -40,13 +40,7 @@
           <label><strong>Authentication</strong></label>
           <fieldset>
             <label>
-              <input type="radio" id="authTypeDefault" name="authType" value="Default"@if(settings.authType != "LDAP"){ checked}/>
-              Default
-            </label>
-          </fieldset>
-          <fieldset>
-            <label>
-              <input type="radio" id="authTypeLDAP" name="authType" value="LDAP"@if(settings.authType == "LDAP"){ checked}/>
+              <input type="checkbox" id="ldapAuthentication" name="ldapAuthentication"@if(settings.ldap){ checked}/>
               LDAP
             </label>
           </fieldset>
@@ -147,9 +141,8 @@
     $('.notification input').prop('disabled', !$(this).prop('checked'));
   }).change();
 
-  $('input[name=authType]').click(function(){
-    $('.ldap input').prop('disabled', $('input[name=authType]:checked').val() != "LDAP");
-  });
-  $('input[name=authType]:checked').click();
+  $('#ldapAuthentication').change(function(){
+    $('.ldap input').prop('disabled', !$(this).prop('checked'));
+  }).change();
 });
 </script>
\ No newline at end of file