diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index 78abdb19684d..88e2a5a8f022 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -355,7 +355,7 @@ static int analogix_dp_enable_sink_to_assr_mode(struct analogix_dp_device *dp, b
 		ret = drm_dp_dpcd_writeb(&dp->aux, DP_EDP_CONFIGURATION_SET,
 					 data | DP_ALTERNATE_SCRAMBLER_RESET_ENABLE);
 	else
-		ret = drm_dp_dpcd_writeb(&dp->aux, DP_LANE_COUNT_SET,
+		ret = drm_dp_dpcd_writeb(&dp->aux, DP_EDP_CONFIGURATION_SET,
 					 data & ~DP_ALTERNATE_SCRAMBLER_RESET_ENABLE);
 
 	return ret < 0 ? ret : 0;