diff --git a/mm/swapfile.c b/mm/swapfile.c
index be33e6176cd901cb1b090cfaf08b1c572f8944cf..6d63bd9b7da264f6fba2224122ab097791f44802 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -3475,7 +3475,7 @@ int swap_duplicate(swp_entry_t entry)
  *
  * Called when allocating swap cache for existing swap entry,
  * This can return error codes. Returns 0 at success.
- * -EBUSY means there is a swap cache.
+ * -EEXIST means there is a swap cache.
  * Note: return code is different from swap_duplicate().
  */
 int swapcache_prepare(swp_entry_t entry)