diff --git a/src/dhcp.c b/src/dhcp.c
index 73c9bee6..e2d48244 100644
--- a/src/dhcp.c
+++ b/src/dhcp.c
@@ -1155,10 +1155,10 @@ make_message(struct bootp **bootpm, const struct interface *ifp, uint8_t type)
 				lp = rfc3396_zero(&rctx);
 				if (lp == NULL)
 					goto toobig;
-				if (rfc3396_write_byte(&rctx, 
+				if (rfc3396_write_byte(&rctx,
 				    (uint8_t)vivco->len) == -1)
 					goto toobig;
-				if (rfc3396_write(&rctx, 
+				if (rfc3396_write(&rctx,
 				    vivco->data, vivco->len) == -1)
 					goto toobig;
 				*lp = (uint8_t)(*lp + vivco->len + 1);