diff --git a/avr/send.c b/avr/send.c
index 5610fed..ff129dc 100644
--- a/avr/send.c
+++ b/avr/send.c
@@ -105,7 +105,7 @@ static void spi_send_job(tabby_printer_job *job,
                          tabby_printer_response *response) {
     spi_send_packet(TABBY_PRINTER_PACKET_JOB,
                     job->data,
-                    sizeof(job),
+                    sizeof(*job),
                     response);
 }