diff --git a/lemonldap-ng-common/lemonldap-ng.ini b/lemonldap-ng-common/lemonldap-ng.ini
index 8e096d165..41d084583 100644
--- a/lemonldap-ng-common/lemonldap-ng.ini
+++ b/lemonldap-ng-common/lemonldap-ng.ini
@@ -118,6 +118,11 @@ localStorageOptions={                      \
 # Old menu HTML code
 # Enable it if you use old templates
 ;useOldMenuItems=1
+# Override error codes
+;error_0 = You are well authenticated!
+# Custom template parameters
+# For example to use <TMPL_VAR NAME="myparam"> 
+;tpl_myparam = test
 
 # LOG
 # By default, all is logged in Apache file. To log user actions by
diff --git a/lemonldap-ng-portal/example/mail.pl b/lemonldap-ng-portal/example/mail.pl
index 19fade0cb..da291b4ab 100755
--- a/lemonldap-ng-portal/example/mail.pl
+++ b/lemonldap-ng-portal/example/mail.pl
@@ -115,6 +115,13 @@ if (    $portal->{mail_token}
     );
 }
 
+# Custom template parameters
+if ( my $customParams = $portal->getCustomTemplateParameters() ) {
+    foreach ( keys %$customParams ) {
+        $template->param( $_, $customParams->{$_} );
+    }
+}
+
 print $portal->header('text/html; charset=utf8');
 print $template->output;
 
diff --git a/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Display.pm b/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Display.pm
index f7c277942..83b13f181 100644
--- a/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Display.pm
+++ b/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Display.pm
@@ -325,6 +325,11 @@ sub display {
         ANTIFRAME => $self->{portalAntiFrame},
     );
 
+    ## Custom template params
+    if ( my $customParams = $self->getCustomTemplateParameters() ) {
+	    %templateParams = ( %templateParams, %$customParams );
+    }
+
     return ( "$skin_dir/$skin/$skinfile", %templateParams );
 
 }
diff --git a/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Simple.pm b/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Simple.pm
index 8dc4c5cb2..33156763f 100644
--- a/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Simple.pm
+++ b/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Simple.pm
@@ -2422,8 +2422,7 @@ sub issuerForAuthUser {
         unless ( $self->safe->reval($rule) ) {
             $self->lmLog(
                 "User $user was not allowed to use IssuerDB $issuerDBtype",
-                'warn'
-            );
+                'warn' );
 
             return PE_OK;
         }
@@ -2433,9 +2432,7 @@ sub issuerForAuthUser {
         $self->lmLog( "No rule found for IssuerDB $issuerDBtype", 'debug' );
     }
 
-    $self->lmLog(
-        "User $user allowed to use IssuerDB $issuerDBtype",
-        'debug' );
+    $self->lmLog( "User $user allowed to use IssuerDB $issuerDBtype", 'debug' );
 
     # Register IssuerDB module in session
     $self->addSessionValue( '_issuerDB', $issuerDBtype, $self->{id} );
@@ -2553,6 +2550,27 @@ sub autoPost {
     return PE_REDIRECT;
 }
 
+## @method HASHREF getCustomTemplateParameters()
+# Find custom templates parameters
+# @return Custom parameters
+sub getCustomTemplateParameters {
+
+    my $self            = shift;
+    my $customTplParams = {};
+
+    foreach ( keys %$self ) {
+        next unless ( $_ =~ /^tpl_(.+)$/ );
+        my $tplParam = $1;
+        my $tplValue = $self->{ "tpl_" . $tplParam };
+        $self->lmLog( "Set custom template parameter $tplParam with $tplValue",
+            'debug' );
+
+        $customTplParams->{$tplParam} = $tplValue;
+    }
+
+    return $customTplParams;
+}
+
 1;
 
 __END__