diff --git a/src/memory/paging/table.rs b/src/memory/paging/table.rs
index 6b3c4bb2..c76e9bcd 100644
--- a/src/memory/paging/table.rs
+++ b/src/memory/paging/table.rs
@@ -87,8 +87,10 @@ impl<L> IndexMut<usize> for Table<L> where L: TableLevel
 pub trait TableLevel {}
 
 pub enum Level4 {}
-enum Level3 {}
-enum Level2 {}
+#[allow(dead_code)]
+pub enum Level3 {}
+#[allow(dead_code)]
+pub enum Level2 {}
 pub enum Level1 {}
 
 impl TableLevel for Level4 {}
@@ -96,7 +98,7 @@ impl TableLevel for Level3 {}
 impl TableLevel for Level2 {}
 impl TableLevel for Level1 {}
 
-trait HierarchicalLevel: TableLevel {
+pub trait HierarchicalLevel: TableLevel {
     type NextLevel: TableLevel;
 }