diff --git a/src/jtag/drivers/gw16012.c b/src/jtag/drivers/gw16012.c
index e65f56cd1..6969e8b79 100644
--- a/src/jtag/drivers/gw16012.c
+++ b/src/jtag/drivers/gw16012.c
@@ -448,7 +448,7 @@ static int gw16012_init_device(void)
 		LOG_WARNING("No gw16012 port specified, using default '0x378' (LPT1)");
 	}
 
-	LOG_DEBUG("requesting privileges for parallel port 0x%lx...", (long unsigned)(gw16012_port));
+	LOG_DEBUG("requesting privileges for parallel port 0x%" PRIx16 "...", gw16012_port);
 #if PARPORT_USE_GIVEIO == 1
 	if (gw16012_get_giveio_access() != 0) {
 #else /* PARPORT_USE_GIVEIO */