diff --git a/mdbx.h b/mdbx.h
index 364b6c76..4afd81e9 100644
--- a/mdbx.h
+++ b/mdbx.h
@@ -610,7 +610,7 @@ LIBMDBX_API int mdbx_env_create(MDBX_env **penv);
  *  - MDBX_NOTLS
  *      Don't use Thread-Local Storage. Tie reader locktable slots to
  *      MDBX_txn objects instead of to threads. I.e. mdbx_txn_reset() keeps
- *      the slot reseved for the MDBX_txn object. A thread may use parallel
+ *      the slot reserved for the MDBX_txn object. A thread may use parallel
  *      read-only transactions. A read-only transaction may span threads if
  *      the user synchronizes its use. Applications that multiplex many
  *      user threads over individual OS threads need this option. Such an