diff --git a/src/hl_vt100.c b/src/hl_vt100.c
index 1014372..091b6b6 100644
--- a/src/hl_vt100.c
+++ b/src/hl_vt100.c
@@ -105,6 +105,14 @@ static int main_loop(struct vt100_headless *this)
     }
 }
 
+void master_write(void *user_data, void *buffer, size_t len)
+{
+    struct vt100_headless *this;
+
+    this = (struct vt100_headless*)user_data;
+    write(this->master, buffer, len);
+}
+
 void vt100_headless_fork(struct vt100_headless *this,
                          const char *progname,
                          char *const argv[])
@@ -125,9 +133,9 @@ void vt100_headless_fork(struct vt100_headless *this,
     }
     else
     {
-        this->term = vt100_init(lw_terminal_default_unimplemented);
+        this->term = vt100_init(this, lw_terminal_default_unimplemented);
+        this->term->master_write = master_write;
         ioctl(this->master, TIOCSWINSZ, &winsize);
-        this->term->lw_terminal->fd = this->master;
         main_loop(this);
     }
     restore_termios(this, 0);
diff --git a/src/lw_terminal_parser.h b/src/lw_terminal_parser.h
index a49bb79..e1db3e9 100644
--- a/src/lw_terminal_parser.h
+++ b/src/lw_terminal_parser.h
@@ -192,7 +192,6 @@ struct lw_terminal
     void                   *user_data;
     void                   (*unimplemented)(struct lw_terminal*,
                                             char *seq, char chr);
-    int                    fd;
 };
 
 struct lw_terminal *lw_terminal_init(void);
diff --git a/src/lw_terminal_vt100.c b/src/lw_terminal_vt100.c
index 31c0727..b5f81b0 100644
--- a/src/lw_terminal_vt100.c
+++ b/src/lw_terminal_vt100.c
@@ -448,7 +448,7 @@ static void DA(struct lw_terminal *term_emul)
     struct lw_terminal_vt100 *vt100;
 
     vt100 = (struct lw_terminal_vt100 *)term_emul->user_data;
-    write(term_emul->fd, "\033[?1;0c", 7); /* Do not write directly ? */
+    vt100->master_write(vt100->user_data, "\033[?1;0c", 7);
 }
 
 /*
@@ -895,13 +895,15 @@ const char **vt100_getlines(struct lw_terminal_vt100 *vt100)
     return (const char **)vt100->lines;
 }
 
-struct lw_terminal_vt100 *vt100_init(void (*unimplemented)(struct lw_terminal* term_emul, char *seq, char chr))
+struct lw_terminal_vt100 *vt100_init(void *user_data,
+                                     void (*unimplemented)(struct lw_terminal* term_emul, char *seq, char chr))
 {
     struct lw_terminal_vt100 *this;
 
     this = calloc(1, sizeof(*this));
     if (this == NULL)
         return NULL;
+    this->user_data = user_data;
     this->height = 24;
     this->width = 80;
     this->screen = malloc(132 * SCROLLBACK * this->height);
diff --git a/src/lw_terminal_vt100.h b/src/lw_terminal_vt100.h
index 65e11e0..95fde4b 100644
--- a/src/lw_terminal_vt100.h
+++ b/src/lw_terminal_vt100.h
@@ -62,9 +62,13 @@ struct lw_terminal_vt100
     unsigned int selected_charset;
     unsigned int modes;
     char         *lines[80];
+    void         (*master_write)(void *user_data, void *buffer, size_t len);
+    void         *user_data;
 };
 
-struct lw_terminal_vt100 *vt100_init(void (*unimplemented)(struct lw_terminal* term_emul, char *seq, char chr));
+struct lw_terminal_vt100 *vt100_init(void *user_data,
+                                     void (*unimplemented)(struct lw_terminal* term_emul,
+                                                           char *seq, char chr));
 char vt100_get(struct lw_terminal_vt100 *vt100, unsigned int x, unsigned int y);
 const char **vt100_getlines(struct lw_terminal_vt100 *vt100);
 void lw_terminal_this_destroy(struct lw_terminal_vt100 *this);