diff --git a/samples/net/sockets/echo_client/prj.conf b/samples/net/sockets/echo_client/prj.conf
index ca40355046d..f0d972f47c4 100644
--- a/samples/net/sockets/echo_client/prj.conf
+++ b/samples/net/sockets/echo_client/prj.conf
@@ -4,7 +4,6 @@ CONFIG_NET_UDP=y
 CONFIG_NET_TCP=y
 CONFIG_NET_IPV6=y
 CONFIG_NET_IPV4=y
-CONFIG_NEWLIB_LIBC=y
 CONFIG_NET_SOCKETS=y
 CONFIG_NET_SOCKETS_POSIX_NAMES=y
 CONFIG_NET_SOCKETS_POLL_MAX=4
diff --git a/samples/net/sockets/echo_server/prj.conf b/samples/net/sockets/echo_server/prj.conf
index 43497135d4c..b8a640ffc89 100644
--- a/samples/net/sockets/echo_server/prj.conf
+++ b/samples/net/sockets/echo_server/prj.conf
@@ -4,7 +4,6 @@ CONFIG_NET_UDP=y
 CONFIG_NET_TCP=y
 CONFIG_NET_IPV6=y
 CONFIG_NET_IPV4=y
-CONFIG_NEWLIB_LIBC=y
 CONFIG_NET_SOCKETS=y
 CONFIG_NET_SOCKETS_POSIX_NAMES=y