diff --git a/board/vfd.c b/board/vfd.c
index 1b6c626..abc487a 100644
--- a/board/vfd.c
+++ b/board/vfd.c
@@ -50,7 +50,7 @@ HRESULT vfd_handle_create_char2(struct const_iobuf* reader, struct iobuf* writer
 
 static bool utf_enabled;
 
-HRESULT vfd_hook_init(struct vfd_config *cfg)
+HRESULT vfd_hook_init(struct vfd_config *cfg, int default_port)
 {
     if (!cfg->enable){
         return S_FALSE;
@@ -58,8 +58,13 @@ HRESULT vfd_hook_init(struct vfd_config *cfg)
 
     utf_enabled = cfg->utf_conversion;
 
-    dprintf("VFD: enabling (port=%d)\n", cfg->port);
-    uart_init(&vfd_uart, cfg->port);
+    int port = cfg->port;
+    if (port == 0){
+        port = default_port;
+    }
+
+    dprintf("VFD: enabling (port=%d)\n", port);
+    uart_init(&vfd_uart, port);
     vfd_uart.written.bytes = vfd_written;
     vfd_uart.written.nbytes = sizeof(vfd_written);
     vfd_uart.readable.bytes = vfd_readable;
diff --git a/board/vfd.h b/board/vfd.h
index 42c2e04..3e67061 100644
--- a/board/vfd.h
+++ b/board/vfd.h
@@ -9,5 +9,5 @@ struct vfd_config {
 };
 
 
-HRESULT vfd_hook_init(struct vfd_config *cfg);
+HRESULT vfd_hook_init(struct vfd_config *cfg, int default_port);
 
diff --git a/chusanhook/dllmain.c b/chusanhook/dllmain.c
index 43509ef..85c6228 100644
--- a/chusanhook/dllmain.c
+++ b/chusanhook/dllmain.c
@@ -146,7 +146,7 @@ static DWORD CALLBACK chusan_pre_startup(void)
     unsigned int first_port = is_cvt ? 2 : 20;
 
     if (!is_cvt) {
-        hr = vfd_hook_init(&chusan_hook_cfg.vfd);
+        hr = vfd_hook_init(&chusan_hook_cfg.vfd, 2);
 
         if (FAILED(hr)) {
             goto fail;
diff --git a/cmhook/dllmain.c b/cmhook/dllmain.c
index 4123443..ac54a9d 100644
--- a/cmhook/dllmain.c
+++ b/cmhook/dllmain.c
@@ -84,7 +84,7 @@ static DWORD CALLBACK cm_pre_startup(void)
         goto fail;
     }
 
-    hr = vfd_hook_init(&cm_hook_cfg.vfd);
+    hr = vfd_hook_init(&cm_hook_cfg.vfd, 2);
 
     if (FAILED(hr)) {
         goto fail;
diff --git a/fgohook/dllmain.c b/fgohook/dllmain.c
index 9b8613d..dfbbdb5 100644
--- a/fgohook/dllmain.c
+++ b/fgohook/dllmain.c
@@ -84,7 +84,7 @@ static DWORD CALLBACK fgo_pre_startup(void)
         goto fail;
     }
 
-    hr = vfd_hook_init(&fgo_hook_cfg.vfd);
+    hr = vfd_hook_init(&fgo_hook_cfg.vfd, 1);
 
     if (FAILED(hr)) {
         goto fail;
diff --git a/mai2hook/dllmain.c b/mai2hook/dllmain.c
index 3b4f6a7..02f32a4 100644
--- a/mai2hook/dllmain.c
+++ b/mai2hook/dllmain.c
@@ -79,7 +79,7 @@ static DWORD CALLBACK mai2_pre_startup(void)
         goto fail;
     }
 
-    hr = vfd_hook_init(&mai2_hook_cfg.vfd);
+    hr = vfd_hook_init(&mai2_hook_cfg.vfd, 2);
 
     if (FAILED(hr)) {
         goto fail;
diff --git a/mercuryhook/dllmain.c b/mercuryhook/dllmain.c
index 2810574..ea30458 100644
--- a/mercuryhook/dllmain.c
+++ b/mercuryhook/dllmain.c
@@ -77,7 +77,7 @@ static DWORD CALLBACK mercury_pre_startup(void)
         goto fail;
     }
 
-    hr = vfd_hook_init(&mercury_hook_cfg.vfd);
+    hr = vfd_hook_init(&mercury_hook_cfg.vfd, 2);
 
     if (FAILED(hr)) {
         goto fail;
diff --git a/mu3hook/dllmain.c b/mu3hook/dllmain.c
index 10e1226..bab6c0b 100644
--- a/mu3hook/dllmain.c
+++ b/mu3hook/dllmain.c
@@ -93,7 +93,7 @@ static DWORD CALLBACK mu3_pre_startup(void)
         goto fail;
     }
 
-    hr = vfd_hook_init(&mu3_hook_cfg.vfd);
+    hr = vfd_hook_init(&mu3_hook_cfg.vfd, 2);
 
     if (FAILED(hr)) {
         goto fail;
diff --git a/swdchook/dllmain.c b/swdchook/dllmain.c
index d40cc52..94d68ea 100644
--- a/swdchook/dllmain.c
+++ b/swdchook/dllmain.c
@@ -79,7 +79,7 @@ static DWORD CALLBACK swdc_pre_startup(void)
         goto fail;
     }
 
-    hr = vfd_hook_init(&swdc_hook_cfg.vfd);
+    hr = vfd_hook_init(&swdc_hook_cfg.vfd, 4);
 
     if (FAILED(hr)) {
         return hr;