2 files changed, 3 insertions, 2 deletions
diff --git a/tinyusb/common/errors.c b/tinyusb/common/errors.c
index 0b36a6c8b..53e10d763 100644
--- a/tinyusb/common/errors.c
+++ b/tinyusb/common/errors.c
@@ -39,7 +39,7 @@
 
 #if TUSB_CFG_DEBUG == 3
 
-unsigned char const* const TUSB_ErrorStr[] =
+uint8_t const* const TUSB_ErrorStr[] =
 {
  ERROR_TABLE(ERROR_STRING)
  0
diff --git a/tinyusb/common/errors.h b/tinyusb/common/errors.h
index 3b37154d3..e55ab3f4e 100644
--- a/tinyusb/common/errors.h
+++ b/tinyusb/common/errors.h
@@ -49,6 +49,7 @@
 #ifndef _TUSB_ERRORS_H_
 #define _TUSB_ERRORS_H_
 
+#include <stdint.h>
 #include "../tusb_option.h"
 
 #ifdef __cplusplus
@@ -77,7 +78,7 @@ typedef enum {
 
 #if TUSB_CFG_DEBUG == 3
 /// Enum to String for debugging purposes. Only available if \ref TUSB_CFG_DEBUG > 0
-extern unsigned char const* const TUSB_ErrorStr[];
+extern uint8_t const* const TUSB_ErrorStr[];
 #endif
 
 #ifdef __cplusplus