diff --git a/src/main/jbhook1/dllmain.c b/src/main/jbhook1/dllmain.c
index ad44eaa..d210e3b 100644
--- a/src/main/jbhook1/dllmain.c
+++ b/src/main/jbhook1/dllmain.c
@@ -140,6 +140,7 @@ static HWND CDECL my_mwindow_create(
 
     rs232_hook_init();
     jbhook_util_ac_io_port_init(L"COM1");
+    jbhook_util_ac_io_set_iccb();
 
     p3io_setupapi_insert_hooks(NULL);
     jbhook_util_p3io_init(