diff --git a/halfsiphash.c b/halfsiphash.c
index d74d3be..adfe1d2 100644
--- a/halfsiphash.c
+++ b/halfsiphash.c
@@ -24,12 +24,6 @@
 
 #define ROTL(x, b) (uint32_t)(((x) << (b)) | ((x) >> (32 - (b))))
 
-#define U32TO8_LE(p, v)                                                        \
-    (p)[0] = (uint8_t)((v));                                                   \
-    (p)[1] = (uint8_t)((v) >> 8);                                              \
-    (p)[2] = (uint8_t)((v) >> 16);                                             \
-    (p)[3] = (uint8_t)((v) >> 24);
-
 #define U32TO8_LE(p, v)                                                        \
     (p)[0] = (uint8_t)((v));                                                   \
     (p)[1] = (uint8_t)((v) >> 8);                                              \