diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c
index a0e65d9..e43e8dc 100644
--- a/libraries/liblmdb/mdb.c
+++ b/libraries/liblmdb/mdb.c
@@ -10866,7 +10866,7 @@ mdb_reader_check(MDB_env *env, int *dead)
 	return env->me_txns ? mdb_reader_check0(env, 0, dead) : MDB_SUCCESS;
 }
 
-/** As #mdb_reader_check(). rlocked = <caller locked the reader mutex>. */
+/** As #mdb_reader_check(). \b rlocked is set if caller locked #me_rmutex. */
 static int ESECT
 mdb_reader_check0(MDB_env *env, int rlocked, int *dead)
 {