diff --git a/lib/Twig/SimpleFilter.php b/lib/Twig/SimpleFilter.php
new file mode 100644
index 000000000..b5aaa3990
--- /dev/null
+++ b/lib/Twig/SimpleFilter.php
@@ -0,0 +1,19 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Empty class for Twig 1.x compatibility.
+ *
+ * @deprecated to be removed in 3.0
+ */
+class Twig_SimpleFilter extends Twig_Filter
+{
+}
diff --git a/lib/Twig/SimpleFunction.php b/lib/Twig/SimpleFunction.php
new file mode 100644
index 000000000..4a716b625
--- /dev/null
+++ b/lib/Twig/SimpleFunction.php
@@ -0,0 +1,19 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Empty class for Twig 1.x compatibility.
+ *
+ * @deprecated to be removed in 3.0
+ */
+class Twig_SimpleFunction extends Twig_Function
+{
+}
diff --git a/lib/Twig/SimpleTest.php b/lib/Twig/SimpleTest.php
new file mode 100644
index 000000000..0f49d7253
--- /dev/null
+++ b/lib/Twig/SimpleTest.php
@@ -0,0 +1,19 @@
+<?php
+
+/*
+ * This file is part of Twig.
+ *
+ * (c) Fabien Potencier
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+/**
+ * Empty class for Twig 1.x compatibility.
+ *
+ * @deprecated to be removed in 3.0
+ */
+class Twig_SimpleTest extends Twig_Test
+{
+}