1 files changed, 3 insertions, 2 deletions

diff --git a/src/io.c b/src/io.c
index a4230ce..f1a2b9d 100644
--- a/src/io.c
+++ b/src/io.c
@@ -2,6 +2,7 @@
 * Input/Output abstraction
 * LuaSocket toolkit
 \*=========================================================================*/
+#include "luasocket.h"
 #include "io.h"
 
 /*=========================================================================*\
@@ -10,7 +11,7 @@
 /*-------------------------------------------------------------------------*\
 * Initializes C structure
 \*-------------------------------------------------------------------------*/
-void io_init(p_io io, p_send send, p_recv recv, p_error error, void *ctx) {
+LUASOCKET_PRIVATE void io_init(p_io io, p_send send, p_recv recv, p_error error, void *ctx) {
     io->send = send;
     io->recv = recv;
     io->error = error;
@@ -20,7 +21,7 @@ void io_init(p_io io, p_send send, p_recv recv, p_error error, void *ctx) {
 /*-------------------------------------------------------------------------*\
 * I/O error strings
 \*-------------------------------------------------------------------------*/
-const char *io_strerror(int err) {
+LUASOCKET_PRIVATE const char *io_strerror(int err) {
     switch (err) {
         case IO_DONE: return NULL;
         case IO_CLOSED: return "closed";