diff --git a/src/hashset.hpp b/src/hashset.hpp
index b90331c1..92022f8f 100644
--- a/src/hashset.hpp
+++ b/src/hashset.hpp
@@ -18,6 +18,9 @@
 
 #pragma once
 
+#define RAPIDHASH_FAST
+#define RAPIDHASH_UNROLLED
+
 #include "khash.h"
 #include "wyhash.h"
 #include "rapidhash.h"