diff --git a/bootloader/iriver_h1x0.c b/bootloader/iriver_h1x0.c
index 380d0e91bd..8ac0ab4d06 100644
--- a/bootloader/iriver_h1x0.c
+++ b/bootloader/iriver_h1x0.c
@@ -599,17 +599,3 @@ int usb_screen(void)
 {
    return 0;
 }
-
-ucschar_t *bidi_l2v(const unsigned char *str, int orientation)
-{
-    static ucschar_t utf_buf[SCROLL_LINE_SIZE];
-    ucschar_t *target;
-    (void)orientation;
-
-    target = utf_buf;
-
-    while (*str)
-        str = utf8decode(str, target++);
-    *target = 0;
-    return utf_buf;
-}
diff --git a/bootloader/iriver_h300.c b/bootloader/iriver_h300.c
index 8fb273edb2..5780802ab8 100644
--- a/bootloader/iriver_h300.c
+++ b/bootloader/iriver_h300.c
@@ -668,17 +668,3 @@ int usb_screen(void)
 {
    return 0;
 }
-
-ucschar_t *bidi_l2v(const unsigned char *str, int orientation)
-{
-    static ucschar_t utf_buf[SCROLL_LINE_SIZE];
-    ucschar_t *target;
-    (void)orientation;
-
-    target = utf_buf;
-
-    while (*str)
-        str = utf8decode(str, target++);
-    *target = 0;
-    return utf_buf;
-}