diff --git a/nx/include/switch/kernel/virtmem.h b/nx/include/switch/kernel/virtmem.h
index 81a55675..501b7f1e 100644
--- a/nx/include/switch/kernel/virtmem.h
+++ b/nx/include/switch/kernel/virtmem.h
@@ -14,15 +14,17 @@ typedef struct VirtmemReservation VirtmemReservation;
  * @brief Reserves a slice of general purpose address space sequentially.
  * @param size Desired size of the slice (rounded up to page alignment).
  * @return Pointer to the slice of address space.
+ * @deprecated This function is prone to race conditions, please use \ref virtmemFindAslr or \ref virtmemFindCodeMemory (and, if necessary, \ref virtmemAddReservation) instead.
  */
-void* virtmemReserve(size_t size);
+void* DEPRECATED virtmemReserve(size_t size);
 
 /**
  * @brief Relinquishes a slice of address space reserved with virtmemReserve (currently no-op).
  * @param addr Pointer to the slice.
  * @param size Size of the slice.
+ * @deprecated This function is a companion of \ref virtmemReserve which is deprecated.
  */
-void  virtmemFree(void* addr, size_t size);
+void DEPRECATED virtmemFree(void* addr, size_t size);
 
 /// Locks the virtual memory manager mutex.
 void virtmemLock(void);