diff --git a/TODO-2.0.md b/TODO-2.0.md
index e7d5ed315..10cbecfad 100644
--- a/TODO-2.0.md
+++ b/TODO-2.0.md
@@ -19,6 +19,11 @@
 * Add test for #173
 * lwpSslOpt
 
+# Combination
+
+* getDisplayType()
+* detect changes
+
 # Password
 
 * Enable it during auth
diff --git a/lemonldap-ng-manager/lib/Lemonldap/NG/Manager/Conf/Tests.pm b/lemonldap-ng-manager/lib/Lemonldap/NG/Manager/Conf/Tests.pm
index 2669c4978..f30a65b43 100644
--- a/lemonldap-ng-manager/lib/Lemonldap/NG/Manager/Conf/Tests.pm
+++ b/lemonldap-ng-manager/lib/Lemonldap/NG/Manager/Conf/Tests.pm
@@ -275,6 +275,27 @@ sub tests {
             # Return
             return 1;
         },
+        checkCombinations => sub {
+            return 1 unless ( $conf->{authentication} eq 'Combination' );
+            require Lemonldap::NG::Common::Combination::Parser;
+            return ( 0, 'No module declared for combination' )
+              unless ( $conf->{combModules} and %{ $conf->{combModules} } );
+            my $moduleList;
+            foreach my $md ( keys %{ $conf->{combModules} } ) {
+                my $entry = $conf->{combModules}->{$md};
+                $moduleList->{$md} = (
+                      $entry->{for} == 2 ? [ undef, {} ]
+                    : $entry->{for} == 1 ? [ {}, undef ]
+                    :                      [ {}, {} ]
+                );
+            }
+            eval {
+                Lemonldap::NG::Common::Combination::Parser->parse( $moduleList,
+                    $conf->{combination} );
+            };
+            return ( 0, $@ ) if ($@);
+            return 1;
+        },
     };
 }
 
diff --git a/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Auth/Combination.pm b/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Auth/Combination.pm
index 8cb832308..55b0de0a6 100644
--- a/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Auth/Combination.pm
+++ b/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Auth/Combination.pm
@@ -111,7 +111,10 @@ sub setGroups {
 }
 
 sub getDisplayType {
-    return $_[0]->try( 0, 'getDisplayType', {} );
+    my ( $self, $req ) = @_;
+    my ( $nb, $stack ) = ( $req->datas->{multiTry}, $req->datas->{multiStack} );
+    my ( $res, $name ) = $stack->[$nb]->[0]->( 'getDisplayType', $req );
+    return $res;
 }
 
 # TODO: authLogout
diff --git a/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Main/Display.pm b/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Main/Display.pm
index 153956d7b..786f97fe8 100644
--- a/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Main/Display.pm
+++ b/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Main/Display.pm
@@ -251,7 +251,7 @@ sub display {
 
         }
 
-        # Display authentifcation form
+        # Display authentication form
         else {
 
             # Authentication loop