diff --git a/bootstrap.php b/bootstrap.php
index 3ee3898..0191df2 100644
--- a/bootstrap.php
+++ b/bootstrap.php
@@ -17,6 +17,16 @@
     exit(1);
 }
 
+// Ensure that the `Page` and `PageController` classes exist, if they don't _(for example when testing a
+// silverstripe module)_ ensure that the symbols are registered.
+if (!class_exists(\Page::class)) {
+    require __DIR__ . '/stubs/Page.php';
+}
+
+if (!class_exists(\PageController::class)) {
+    require __DIR__ . '/stubs/PageController.php';
+}
+
 // Ensure global $_SERVER exists
 global $_SERVER;
 if (!$_SERVER) {
diff --git a/stubs/Page.php b/stubs/Page.php
new file mode 100644
index 0000000..790c27d
--- /dev/null
+++ b/stubs/Page.php
@@ -0,0 +1,8 @@
+<?php
+
+namespace {
+
+    use SilverStripe\CMS\Model\SiteTree;
+
+    class Page extends SiteTree {}
+}
\ No newline at end of file
diff --git a/stubs/PageController.php b/stubs/PageController.php
new file mode 100644
index 0000000..26c93d5
--- /dev/null
+++ b/stubs/PageController.php
@@ -0,0 +1,8 @@
+<?php
+
+namespace {
+
+    use SilverStripe\CMS\Controllers\ContentController;
+
+    class PageController extends ContentController {}
+}
\ No newline at end of file