diff --git a/libraries/liblmdb/mdb.c b/libraries/liblmdb/mdb.c
index fe65e30..0070215 100644
--- a/libraries/liblmdb/mdb.c
+++ b/libraries/liblmdb/mdb.c
@@ -2526,7 +2526,7 @@ mdb_env_sync(MDB_env *env, int force)
 					rc = ErrCode();
 			} else
 #endif
-			if (MDB_FDATASYNC(env->me_fd))
+			if (fcntl(env->me_fd, F_FULLFSYNC, 0))
 				rc = ErrCode();
 		}
 	}