diff --git a/boards/mro/x21-777/default.px4board b/boards/mro/x21-777/default.px4board
index bf94e4b2c7ac..cec5dd074a85 100644
--- a/boards/mro/x21-777/default.px4board
+++ b/boards/mro/x21-777/default.px4board
@@ -67,7 +67,6 @@ CONFIG_MODULES_NAVIGATOR=y
 CONFIG_MODULES_RC_UPDATE=y
 CONFIG_MODULES_ROVER_POS_CONTROL=y
 CONFIG_MODULES_SENSORS=y
-CONFIG_MODULES_SIMULATION_SIMULATOR_SIH=n
 CONFIG_MODULES_TEMPERATURE_COMPENSATION=y
 CONFIG_MODULES_UUV_ATT_CONTROL=y
 CONFIG_MODULES_UUV_POS_CONTROL=y
diff --git a/boards/px4/fmu-v6u/default.px4board b/boards/px4/fmu-v6u/default.px4board
index 6addac12f3f4..29d6ae8afe97 100644
--- a/boards/px4/fmu-v6u/default.px4board
+++ b/boards/px4/fmu-v6u/default.px4board
@@ -68,7 +68,6 @@ CONFIG_MODULES_NAVIGATOR=y
 CONFIG_MODULES_RC_UPDATE=y
 CONFIG_MODULES_ROVER_POS_CONTROL=y
 CONFIG_MODULES_SENSORS=y
-CONFIG_MODULES_SIMULATION_SIMULATOR_SIH=n
 CONFIG_MODULES_TEMPERATURE_COMPENSATION=y
 CONFIG_MODULES_UXRCE_DDS_CLIENT=y
 CONFIG_MODULES_VTOL_ATT_CONTROL=y