diff --git a/src/class/hid/hid_device.c b/src/class/hid/hid_device.c
index 7aeb39957..316067e61 100644
--- a/src/class/hid/hid_device.c
+++ b/src/class/hid/hid_device.c
@@ -446,6 +446,8 @@ tusb_error_t hidd_xfer_cb(uint8_t rhport, uint8_t edpt_addr, tusb_event_t event,
 /*------------------------------------------------------------------*/
 /* Ascii to Keycode
  *------------------------------------------------------------------*/
+#if CFG_TUD_HID_ASCII_TO_KEYCODE_LOOKUP
+
 const hid_ascii_to_keycode_entry_t HID_ASCII_TO_KEYCODE[128] =
 {
     {0, 0                     }, // 0x00 Null
@@ -582,3 +584,5 @@ const hid_ascii_to_keycode_entry_t HID_ASCII_TO_KEYCODE[128] =
 };
 
 #endif
+
+#endif