diff --git a/zebra/zebra_srv6.c b/zebra/zebra_srv6.c
index 2a0b05fec205..b1c8fbade48a 100644
--- a/zebra/zebra_srv6.c
+++ b/zebra/zebra_srv6.c
@@ -222,7 +222,7 @@ separate_locator_prefix_into_chunk(struct srv6_locator *loc,
 {
 	struct prefix_ipv6 chunk_prefix = loc->prefix;
 	chunk_prefix.prefixlen += loc->perchunk_bits_length;
-	chunk_prefix.prefix.s6_addr16[4] = htons(chunk_index);
+	chunk_prefix.prefix.s6_addr32[2] = (uint32_t)htons(chunk_index);
 	return chunk_prefix;
 }