diff --git a/libraries/SITL/examples/SilentWings/Params/Rolladen-Schneider-LS8b.param b/libraries/SITL/examples/SilentWings/Params/Rolladen-Schneider-LS8b.param
index 9262165c95..29a438f29e 100644
--- a/libraries/SITL/examples/SilentWings/Params/Rolladen-Schneider-LS8b.param
+++ b/libraries/SITL/examples/SilentWings/Params/Rolladen-Schneider-LS8b.param
@@ -18,7 +18,6 @@ AHRS_TRIM_Y,0
 AHRS_TRIM_Z,0
 AHRS_WIND_MAX,0
 AHRS_YAW_P,0.2
-ALT_CTRL_ALG,0
 ALT_HOLD_FBWCM,0
 ALT_HOLD_RTL,10000
 ALT_OFFSET,0
diff --git a/libraries/SITL/examples/SilentWings/Params/Schleicher-ASW27B.param b/libraries/SITL/examples/SilentWings/Params/Schleicher-ASW27B.param
index fc8bc11362..753c2f8174 100644
--- a/libraries/SITL/examples/SilentWings/Params/Schleicher-ASW27B.param
+++ b/libraries/SITL/examples/SilentWings/Params/Schleicher-ASW27B.param
@@ -18,7 +18,6 @@ AHRS_TRIM_Y,0
 AHRS_TRIM_Z,0
 AHRS_WIND_MAX,0
 AHRS_YAW_P,0.2
-ALT_CTRL_ALG,0
 ALT_HOLD_FBWCM,0
 ALT_HOLD_RTL,10000
 ALT_OFFSET,0