diff --git a/samples/net/cloud/aws_iot_mqtt/prj.conf b/samples/net/cloud/aws_iot_mqtt/prj.conf
index ef5f6574ef7..825bd8514b9 100644
--- a/samples/net/cloud/aws_iot_mqtt/prj.conf
+++ b/samples/net/cloud/aws_iot_mqtt/prj.conf
@@ -39,7 +39,6 @@ CONFIG_NET_DHCPV4=y
 
 # SNTP
 CONFIG_SNTP=y
-CONFIG_POSIX_TIMERS=y
 CONFIG_NET_CONFIG_CLOCK_SNTP_INIT=y
 CONFIG_NET_CONFIG_SNTP_INIT_SERVER="0.pool.ntp.org"
 
diff --git a/samples/net/lwm2m_client/overlay-data-cache.conf b/samples/net/lwm2m_client/overlay-data-cache.conf
index 523b23519ad..f8356b12d95 100644
--- a/samples/net/lwm2m_client/overlay-data-cache.conf
+++ b/samples/net/lwm2m_client/overlay-data-cache.conf
@@ -1,5 +1,4 @@
 CONFIG_ZCBOR=y
 CONFIG_ZCBOR_CANONICAL=y
 CONFIG_LWM2M_RW_SENML_CBOR_SUPPORT=y
-CONFIG_XSI_SINGLE_PROCESS=y
 CONFIG_LWM2M_RESOURCE_DATA_CACHE_SUPPORT=y