diff --git a/src/ServiceContainer/ContextServiceExtension.php b/src/ServiceContainer/ContextServiceExtension.php
index 3d16811..38c8101 100644
--- a/src/ServiceContainer/ContextServiceExtension.php
+++ b/src/ServiceContainer/ContextServiceExtension.php
@@ -68,7 +68,9 @@ public function configure(ArrayNodeDefinition $builder): void
             ->children()
                 ->arrayNode('imports')
                     ->performNoDeepMerging()
-                    ->prototype('scalar')
+                    ->prototype('scalar')->end()
+                ->end()
+            ->end()
         ;
     }