diff --git a/config/default/FeatureFlagChecker.conf.php b/config/default/FeatureFlagChecker.conf.php
index <HASH>..<HASH> 100644
--- a/config/default/FeatureFlagChecker.conf.php
+++ b/config/default/FeatureFlagChecker.conf.php
@@ -5,6 +5,8 @@ use oat\taoLti\models\classes\FeatureFlag\LtiFeatures;
 
 return new FeatureFlagChecker(
     [
-        FeatureFlagChecker::OPTION_MANUALLY_ENABLED_FEATURES => LtiFeatures::LTI_1P3
+        FeatureFlagChecker::OPTION_MANUALLY_ENABLED_FEATURES => [
+            LtiFeatures::LTI_1P3
+        ],
     ]
 );
diff --git a/migrations/Version202009221232112234_tao.php b/migrations/Version202009221232112234_tao.php
index <HASH>..<HASH> 100644
--- a/migrations/Version202009221232112234_tao.php
+++ b/migrations/Version202009221232112234_tao.php
@@ -28,7 +28,10 @@ final class Version202009221232112234_tao extends AbstractMigration
             FeatureFlagChecker::SERVICE_ID,
             new FeatureFlagChecker(
                 [
-                    FeatureFlagChecker::OPTION_MANUALLY_ENABLED_FEATURES => LtiFeatures::LTI_1P3
+                    FeatureFlagChecker::OPTION_MANUALLY_ENABLED_FEATURES =>
+                        [
+                            LtiFeatures::LTI_1P3
+                        ]
                 ]
             )
         );
FeatureFlagChecker OPTION_MANUALLY_ENABLED_FEATURES is array