diff --git a/ircd/db_env.cc b/ircd/db_env.cc
index 886a61c65..b98803240 100644
--- a/ircd/db_env.cc
+++ b/ircd/db_env.cc
@@ -3435,6 +3435,8 @@ catch(const std::exception &e)
 
 	return error_to_status{e};
 }
+#else
+#warning "RocksDB MultiRead is not supported for this build."
 #endif IRCD_DB_HAS_ENV_MULTIREAD
 
 rocksdb::Status
diff --git a/ircd/db_has.h b/ircd/db_has.h
index 428e3e3e5..445cd6945 100644
--- a/ircd/db_has.h
+++ b/ircd/db_has.h
@@ -31,6 +31,12 @@
 	#define IRCD_DB_HAS_ENV_MULTIREAD
 #endif
 
+#if ROCKSDB_MAJOR > 6 \
+|| (ROCKSDB_MAJOR == 6 && ROCKSDB_MINOR > 3) \
+|| (ROCKSDB_MAJOR == 6 && ROCKSDB_MINOR == 3 && ROCKSDB_PATCH >= 6)
+	#define IRCD_DB_HAS_TIMESTAMP
+#endif
+
 #if ROCKSDB_MAJOR > 6 \
 || (ROCKSDB_MAJOR == 6 && ROCKSDB_MINOR > 4) \
 || (ROCKSDB_MAJOR == 6 && ROCKSDB_MINOR == 4 && ROCKSDB_PATCH >= 6)