diff --git a/lemonldap-ng-common/t/01-Common-Conf.t b/lemonldap-ng-common/t/01-Common-Conf.t
index 5c3b48f14..43fa14141 100644
--- a/lemonldap-ng-common/t/01-Common-Conf.t
+++ b/lemonldap-ng-common/t/01-Common-Conf.t
@@ -24,7 +24,7 @@ ok(
           /Error: Unknown package Lemonldap::NG::Common::Conf::Backends::bad\.$/
     ),
     'Bad module'
-);
+) or print STDERR "Msg: $Lemonldap::NG::Common::Conf::msg\n";
 
 $h = bless {}, 'Lemonldap::NG::Common::Conf';
 
diff --git a/lemonldap-ng-common/t/02-Common-Conf-File.t b/lemonldap-ng-common/t/02-Common-Conf-File.t
index b37c35770..afa281ec7 100644
--- a/lemonldap-ng-common/t/02-Common-Conf-File.t
+++ b/lemonldap-ng-common/t/02-Common-Conf-File.t
@@ -48,7 +48,8 @@ for ( my $i = 0 ; $i < @test ; $i++ ) {
             open F, 'file t/lmConf-1.json |';
             $_ = join( '', <F> );
             close F;
-            ok( /(ascii|utf-?8)/si, "File is $1 encoded" );
+            ok( /(ascii|utf-?8)/si, "File is $1 encoded" )
+              or print STDERR "Result: $_\n";
             $count++;
         };
     }