diff --git a/src/mainboard/google/brox/variants/lotso/overridetree.cb b/src/mainboard/google/brox/variants/lotso/overridetree.cb
index 6338e828f6..fa26f03eb9 100644
--- a/src/mainboard/google/brox/variants/lotso/overridetree.cb
+++ b/src/mainboard/google/brox/variants/lotso/overridetree.cb
@@ -74,8 +74,8 @@ chip soc/intel/alderlake
 
 	# Acoustic settings
 	register "acoustic_noise_mitigation" = "1"
-	register "slow_slew_rate[VR_DOMAIN_IA]" = "SLEW_FAST_4"
-	register "slow_slew_rate[VR_DOMAIN_GT]" = "SLEW_FAST_4"
+	register "slow_slew_rate[VR_DOMAIN_IA]" = "SLEW_FAST_8"
+	register "slow_slew_rate[VR_DOMAIN_GT]" = "SLEW_FAST_8"
 	register "fast_pkg_c_ramp_disable[VR_DOMAIN_IA]" = "1"
 	register "fast_pkg_c_ramp_disable[VR_DOMAIN_GT]" = "1"