diff --git a/Userland/Libraries/LibPDF/Page.h b/Userland/Libraries/LibPDF/Page.h
index 5fefa058e17..a8680329ec4 100644
--- a/Userland/Libraries/LibPDF/Page.h
+++ b/Userland/Libraries/LibPDF/Page.h
@@ -7,7 +7,9 @@
 #pragma once
 
 #include <AK/RefPtr.h>
+#include <LibPDF/Error.h>
 #include <LibPDF/Forward.h>
+#include <LibPDF/ObjectDerivatives.h>
 
 namespace PDF {