diff --git a/samples/net/udp/prj.conf b/samples/net/udp/prj.conf
index 436b40c250fe..c870b5f3fc62 100644
--- a/samples/net/udp/prj.conf
+++ b/samples/net/udp/prj.conf
@@ -12,6 +12,7 @@ CONFIG_NETWORKING=y
 CONFIG_NET_NATIVE=y
 CONFIG_NET_IPV4=y
 CONFIG_NET_SOCKETS=y
+CONFIG_POSIX_API=y
 CONFIG_NET_CONNECTION_MANAGER=y
 
 # Heap and stacks
diff --git a/samples/net/udp/src/main.c b/samples/net/udp/src/main.c
index e0ab907ef32f..f70ba5d11dab 100644
--- a/samples/net/udp/src/main.c
+++ b/samples/net/udp/src/main.c
@@ -13,6 +13,12 @@
 #include <zephyr/net/conn_mgr_connectivity.h>
 #include <zephyr/net/conn_mgr_monitor.h>
 
+#if defined(CONFIG_POSIX_API)
+#include <zephyr/posix/arpa/inet.h>
+#include <zephyr/posix/unistd.h>
+#include <zephyr/posix/sys/socket.h>
+#endif
+
 LOG_MODULE_REGISTER(udp_sample, CONFIG_UDP_SAMPLE_LOG_LEVEL);
 
 #define UDP_IP_HEADER_SIZE 28