diff --git a/ports/unix/port/include/arch/cc.h b/ports/unix/port/include/arch/cc.h
index a3dac04..5e6f4db 100644
--- a/ports/unix/port/include/arch/cc.h
+++ b/ports/unix/port/include/arch/cc.h
@@ -32,6 +32,8 @@
 #ifndef LWIP_ARCH_CC_H
 #define LWIP_ARCH_CC_H
 
+#include "Debug.hpp" // libzt
+
 /* see https://sourceforge.net/p/predef/wiki/OperatingSystems/ */
 #if defined __ANDROID__
 #define LWIP_UNIX_ANDROID
@@ -55,9 +57,12 @@
 #endif
 
 #if defined(LWIP_UNIX_ANDROID) && defined(FD_SET)
-typedef __kernel_fd_set fd_set;
+//typedef __kernel_fd_set fd_set;
 #endif
 
+// Comment out the following line to use lwIP's default diagnostic printing routine
+#define LWIP_PLATFORM_DIAG(x)    do {DEBUG_INFO x;} while(0)
+
 struct sio_status_s;
 typedef struct sio_status_s sio_status_t;
 #define sio_fd_t sio_status_t*