diff --git a/DependencyInjection/Builder/ClassFilterBuilder.php b/DependencyInjection/Builder/ClassFilterBuilder.php
index d3020bd7302aa35827f5ada21da94e9e15ee4f5d..c0c50c51485b0e1b99365cac31e423356fdcc6b3 100644
--- a/DependencyInjection/Builder/ClassFilterBuilder.php
+++ b/DependencyInjection/Builder/ClassFilterBuilder.php
@@ -86,7 +86,11 @@ class ClassFilterBuilder
                     $res[$k] = $normalized;
                 }
             }
-            return empty($res) ? null : $res;
+            if (empty($res)) {
+                return null;
+            }
+            sort($res);
+            return $res;
         }
         return $data;
     }