diff --git a/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Lib/OpenIDConnect.pm b/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Lib/OpenIDConnect.pm
index 1171504ac..c58601513 100644
--- a/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Lib/OpenIDConnect.pm
+++ b/lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Lib/OpenIDConnect.pm
@@ -446,7 +446,7 @@ sub checkTokenResponseValidity {
     my ( $self, $json ) = @_;
 
     # token_type MUST be Bearer
-    unless ( $json->{token_type} eq "Bearer" ) {
+    unless ( $json->{token_type} =~ /^Bearer$/i ) {
         $self->logger->error(
             "Token type is " . $json->{token_type} . " but must be Bearer" );
         return 0;