diff --git a/src/avrdude.conf.in b/src/avrdude.conf.in
index 36734e5e1..b8177e494 100644
--- a/src/avrdude.conf.in
+++ b/src/avrdude.conf.in
@@ -715,6 +715,7 @@ programmer
 #     desc                 = "Use the Linux sysfs interface to bitbang GPIO lines";
 #     type                 = "linuxgpio";
 #     prog_modes           = PM_ISP;
+#     connection_type      = linuxgpio;
 #     reset                = ?;
 #     sck                  = ?;
 #     sdo                  = ?;