diff --git a/src/kernel/memory/vmm.tt b/src/kernel/memory/vmm.tt
index 398e027..a505d67 100644
--- a/src/kernel/memory/vmm.tt
+++ b/src/kernel/memory/vmm.tt
@@ -155,3 +155,13 @@ TEST(free_page_does_not_unset_P2_entry_if_not_asked_to)
 
   ASSERT_NEQ_PTR(p2[3], 0);
 }
+TEST(free_page_does_not_unset_P2_entry_if_P1_is_not_empty)
+{
+  BUILD_PT(1,2,3);
+  p1[4] = PAGE_PRESENT;
+  p1[0] = PAGE_PRESENT;
+
+  free_page(p4, ADDR1234, 1);
+
+  ASSERT_NEQ_PTR(p2[3], 0);
+}