diff --git a/centreon/plugins/script_custom.pm b/centreon/plugins/script_custom.pm
index 636e1ff3b..1acd3e9fa 100644
--- a/centreon/plugins/script_custom.pm
+++ b/centreon/plugins/script_custom.pm
@@ -44,8 +44,8 @@ sub new {
         }
     );
     $self->{version} = '1.0';
-    %{$self->{modes}} = ();
-    %{$self->{custom_modes}} = ();
+    $self->{modes} = {};
+    $self->{custom_modes} = {};
     $self->{default} = undef;
     $self->{customdefault} = {};
     $self->{custommode_current} = undef;