diff --git a/xxhash.h b/xxhash.h
index 812dcb01..a4d9eed3 100644
--- a/xxhash.h
+++ b/xxhash.h
@@ -6523,8 +6523,9 @@ XXH3_consumeStripes(xxh_u64* XXH_RESTRICT acc,
 #   define XXH3_STREAM_USE_STACK 1
 # endif
 #endif
-/*
- * Both XXH3_64bits_update and XXH3_128bits_update use this routine.
+/* This function accepts f_acc and f_scramble as function pointers,
+ * making it possible to implement multiple variants with different acc & scramble stages.
+ * This is notably useful to implement multiple vector variants with different intrinsics.
  */
 XXH_FORCE_INLINE XXH_errorcode
 XXH3_update(XXH3_state_t* XXH_RESTRICT const state,
@@ -6605,12 +6606,21 @@ XXH3_update(XXH3_state_t* XXH_RESTRICT const state,
     return XXH_OK;
 }
 
+/*
+ * Both XXH3_64bits_update and XXH3_128bits_update use this routine.
+ */
+static XXH_errorcode
+XXH3_update_regular(XXH_NOESCAPE XXH3_state_t* state, XXH_NOESCAPE const void* input, size_t len)
+{
+    return XXH3_update(state, (const xxh_u8*)input, len,
+                       XXH3_accumulate, XXH3_scrambleAcc);
+}
+
 /*! @ingroup XXH3_family */
 XXH_PUBLIC_API XXH_errorcode
 XXH3_64bits_update(XXH_NOESCAPE XXH3_state_t* state, XXH_NOESCAPE const void* input, size_t len)
 {
-    return XXH3_update(state, (const xxh_u8*)input, len,
-                       XXH3_accumulate, XXH3_scrambleAcc);
+    return XXH3_update_regular(state, input, len);
 }
 
 
@@ -7146,7 +7156,7 @@ XXH3_128bits_reset_withSecretandSeed(XXH_NOESCAPE XXH3_state_t* statePtr, XXH_NO
 XXH_PUBLIC_API XXH_errorcode
 XXH3_128bits_update(XXH_NOESCAPE XXH3_state_t* state, XXH_NOESCAPE const void* input, size_t len)
 {
-    return XXH3_64bits_update(state, input, len);
+    return XXH3_update_regular(state, input, len);
 }
 
 /*! @ingroup XXH3_family */