diff --git a/bin/shell/osh.pl b/bin/shell/osh.pl
index 57c89fe..582b54a 100755
--- a/bin/shell/osh.pl
+++ b/bin/shell/osh.pl
@@ -827,7 +827,7 @@ if ($osh_command) {
         my $isDisabled = OVH::Bastion::plugin_config(plugin => $osh_command, key => "disabled");
 
         # plugin is enabled by default if not explicitly disabled
-        if ($isDisabled and $isDisabled->value() =~ /yes/) {
+        if ($isDisabled and $isDisabled->value()) {
             main_exit OVH::Bastion::EXIT_RESTRICTED_COMMAND, "plugin_disabled", "Sorry, this plugin has been disabled by policy.";
         }
         if ($isDisabled->is_err && $isDisabled->err ne 'KO_NO_SUCH_FILE') {
diff --git a/lib/perl/OVH/Bastion/configuration.inc b/lib/perl/OVH/Bastion/configuration.inc
index fb29050..c279a67 100644
--- a/lib/perl/OVH/Bastion/configuration.inc
+++ b/lib/perl/OVH/Bastion/configuration.inc
@@ -401,6 +401,15 @@ sub plugin_config {
             }
         }
 
+        # compat: we previously expected "yes" as a value for the 'disabled' option, instead of a boolean.
+        # To keep compatibility we still consider "yes" as a true value (as any non-empty string is),
+        # however we check that the user was not confused and didn't try to enable the plugin by using
+        # a string such as "no" or "false" instead of a real false boolean:
+        if (defined $config{'disabled'} && $config{'disabled'} =~ /no|false/) {
+            warn_syslog("Configuration error for plugin $plugin on the 'disabled' key: expected a boolean, casted '" . $config{'disabled'} . "' into false");
+            $config{'disabled'} = 0;
+        }
+
         $_plugin_config_cache{$plugin} = \%config;
     }