diff --git a/boards/ark/fmu-v6x/default.px4board b/boards/ark/fmu-v6x/default.px4board
index 168b17cdfa..1d1cc6f53d 100644
--- a/boards/ark/fmu-v6x/default.px4board
+++ b/boards/ark/fmu-v6x/default.px4board
@@ -60,6 +60,7 @@ CONFIG_MODULES_LOGGER=y
 CONFIG_MODULES_MAG_BIAS_ESTIMATOR=y
 CONFIG_MODULES_MANUAL_CONTROL=y
 CONFIG_MODULES_MAVLINK=y
+CONFIG_MAVLINK_DIALECT="development"
 CONFIG_MODULES_MC_ATT_CONTROL=y
 CONFIG_MODULES_MC_AUTOTUNE_ATTITUDE_CONTROL=y
 CONFIG_MODULES_MC_HOVER_THRUST_ESTIMATOR=y
diff --git a/boards/ark/pi6x/default.px4board b/boards/ark/pi6x/default.px4board
index 45f992d69e..49de557ae4 100644
--- a/boards/ark/pi6x/default.px4board
+++ b/boards/ark/pi6x/default.px4board
@@ -39,6 +39,7 @@ CONFIG_MODULES_LOGGER=y
 CONFIG_MODULES_MAG_BIAS_ESTIMATOR=y
 CONFIG_MODULES_MANUAL_CONTROL=y
 CONFIG_MODULES_MAVLINK=y
+CONFIG_MAVLINK_DIALECT="development"
 CONFIG_MODULES_MC_ATT_CONTROL=y
 CONFIG_MODULES_MC_AUTOTUNE_ATTITUDE_CONTROL=y
 CONFIG_MODULES_MC_HOVER_THRUST_ESTIMATOR=y