diff --git a/programs/x509/cert_app.c b/programs/x509/cert_app.c
index 73e853e..c893ca8 100644
--- a/programs/x509/cert_app.c
+++ b/programs/x509/cert_app.c
@@ -54,7 +54,7 @@
 
 #include "mbedtls/entropy.h"
 #include "mbedtls/ctr_drbg.h"
-#include "mbedtls/net.h"
+#include "mbedtls/net_sockets.h"
 #include "mbedtls/ssl.h"
 #include "mbedtls/x509.h"
 #include "mbedtls/debug.h"