diff --git a/include/mbedtls/net.h b/include/mbedtls/net.h
index 6c13b53..8cead58 100644
--- a/include/mbedtls/net.h
+++ b/include/mbedtls/net.h
@@ -23,6 +23,11 @@
  *
  *  This file is part of mbed TLS (https://tls.mbed.org)
  */
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
 
 #if !defined(MBEDTLS_DEPRECATED_REMOVED)
 #include "net_sockets.h"