diff --git a/src/damage-refinery.c b/src/damage-refinery.c
index 206a75f..51f8405 100644
--- a/src/damage-refinery.c
+++ b/src/damage-refinery.c
@@ -27,6 +27,7 @@
 
 #define XXH_STATIC_LINKING_ONLY
 #define XXH_IMPLEMENTATION
+#define XXH_VECTOR XXH_SCALAR
 #include "xxhash.h"
 
 #define UDIV_UP(a, b) (((a) + (b) - 1) / (b))