diff --git a/kernel/src/mm/pagetable.rs b/kernel/src/mm/pagetable.rs
index 8b743b692..fc28ca93b 100644
--- a/kernel/src/mm/pagetable.rs
+++ b/kernel/src/mm/pagetable.rs
@@ -977,7 +977,7 @@ struct RawPageTablePart {
 impl RawPageTablePart {
     /// Frees a level 1 page table.
     fn free_lvl1(page: &PTPage) {
-        for entry in page.entries {
+        for entry in page.entries.iter().copied() {
             if let Some(page) = PTPage::from_entry(entry) {
                 // SAFETY: the page comes from an entry in the page table,
                 // which we allocated using `PTPage::alloc()`, so this is
@@ -989,7 +989,7 @@ impl RawPageTablePart {
 
     /// Frees a level 2 page table, including all level 1 tables beneath it.
     fn free_lvl2(page: &PTPage) {
-        for entry in page.entries {
+        for entry in page.entries.iter().copied() {
             if let Some(l1_page) = PTPage::from_entry(entry) {
                 Self::free_lvl1(l1_page);
                 // SAFETY: the page comes from an entry in the page table,