diff --git a/src/arch/zephyr/README.md b/src/arch/zephyr/README.md
index 5d5b4a88..05111c93 100644
--- a/src/arch/zephyr/README.md
+++ b/src/arch/zephyr/README.md
@@ -122,7 +122,7 @@ CONFIG_NET_CONTEXT_RCVTIMEO=y
 CONFIG_POSIX_MAX_FDS=12
 CONFIG_NET_MAX_CONTEXTS=16
 CONFIG_NET_SOCKETS=y
-CONFIG_NET_SOCKETS_POSIX_NAMES=y
+CONFIG_NET_SOCKETS_POSIX_NAMES=y # unset if CONFIG_POSIX_API=y
 
 CONFIG_NET_PROMISCUOUS_MODE=y
 # CONFIG_ETH_MCUX_PROMISCUOUS_MODE=y # required by NXP MCUX SOCs
diff --git a/src/arch/zephyr/sockhand.h b/src/arch/zephyr/sockhand.h
index fa935fcf..4e84b499 100644
--- a/src/arch/zephyr/sockhand.h
+++ b/src/arch/zephyr/sockhand.h
@@ -24,6 +24,8 @@
 
 #ifdef CONFIG_POSIX_API
 #include <netinet/in.h>
+#include <sys/select.h>
+#include <unistd.h>
 #else
 #include <zephyr/posix/netinet/in.h>
 #endif