diff --git a/sdk_container/src/third_party/coreos-overlay/eclass/cros-kernel/x86_64_defconfig_boot b/sdk_container/src/third_party/coreos-overlay/eclass/cros-kernel/x86_64_defconfig_boot
index 15a3330954..f0a8ecc568 100644
--- a/sdk_container/src/third_party/coreos-overlay/eclass/cros-kernel/x86_64_defconfig_boot
+++ b/sdk_container/src/third_party/coreos-overlay/eclass/cros-kernel/x86_64_defconfig_boot
@@ -1312,15 +1312,7 @@ CONFIG_DEVPORT=y
 #
 # PPS support
 #
-CONFIG_PPS=m
-# CONFIG_PPS_DEBUG is not set
-
-#
-# PPS clients support
-#
-# CONFIG_PPS_CLIENT_KTIMER is not set
-# CONFIG_PPS_CLIENT_LDISC is not set
-# CONFIG_PPS_CLIENT_GPIO is not set
+# CONFIG_PPS is not set
 
 #
 # PPS generators support
@@ -1329,7 +1321,7 @@ CONFIG_PPS=m
 #
 # PTP clock support
 #
-CONFIG_PTP_1588_CLOCK=m
+# CONFIG_PTP_1588_CLOCK is not set
 
 #
 # Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks.