diff --git a/Userland/Libraries/LibPDF/XRefTable.h b/Userland/Libraries/LibPDF/XRefTable.h
index ee70464755..e6b7a490ca 100644
--- a/Userland/Libraries/LibPDF/XRefTable.h
+++ b/Userland/Libraries/LibPDF/XRefTable.h
@@ -7,6 +7,8 @@
 #pragma once
 
 #include <AK/Format.h>
+#include <AK/RefCounted.h>
+#include <AK/String.h>
 
 namespace PDF {