diff --git a/ports/zephyr/prj.conf b/ports/zephyr/prj.conf
index 9e855036d2..b6559e4f73 100644
--- a/ports/zephyr/prj.conf
+++ b/ports/zephyr/prj.conf
@@ -26,6 +26,7 @@ CONFIG_NET_IPV6=y
 CONFIG_NET_UDP=y
 CONFIG_NET_TCP=y
 CONFIG_NET_SOCKETS=y
+CONFIG_NET_SOCKETS_POSIX_NAMES=n
 CONFIG_TEST_RANDOM_GENERATOR=y
 
 CONFIG_NET_CONFIG_SETTINGS=y