diff --git a/DependencyInjection/Compiler/AddSpreadCompilerPass.php b/DependencyInjection/Compiler/AddSpreadCompilerPass.php
index 5f83012..86b85de 100644
--- a/DependencyInjection/Compiler/AddSpreadCompilerPass.php
+++ b/DependencyInjection/Compiler/AddSpreadCompilerPass.php
@@ -23,9 +23,10 @@ public function process(ContainerBuilder $container)
         }
 
         krsort($spreadByPriority);
+        $spreadByPriority = call_user_func_array('array_merge', $spreadByPriority);
 
         foreach ($spreadByPriority as $spreads) {
-            $spreadDeployer->addMethodCall('addSpread', $spreads);
+            $spreadDeployer->addMethodCall('addSpread', [$spreads]);
         }
     }
 }