diff --git a/components/log/include/esp_log.h b/components/log/include/esp_log.h
index 6a9550046..928fb4905 100644
--- a/components/log/include/esp_log.h
+++ b/components/log/include/esp_log.h
@@ -102,10 +102,10 @@ void esp_log_write(esp_log_level_t level, const char* tag, const char* format, .
  *
  * @param  buffer   Pointer to the buffer array
  *
- * @param  buff_len length of buffer
+ * @param  buff_len length of buffer in bytes
  *
  */
-void esp_log_buffer_hex(const char *tag, const char *buffer, uint16_t buff_len);
+void esp_log_buffer_hex(const char *tag, const void *buffer, uint16_t buff_len);
 
 /**
  * @brief Log a buffer of characters at Info level. Buffer should contain only printable characters.
@@ -114,7 +114,7 @@ void esp_log_buffer_hex(const char *tag, const char *buffer, uint16_t buff_len);
  *
  * @param  buffer   Pointer to the buffer array
  *
- * @param  buff_len length of buffer
+ * @param  buff_len length of buffer in bytes
  *
  */
 void esp_log_buffer_char(const char *tag, const char *buffer, uint16_t buff_len);
diff --git a/components/log/log.c b/components/log/log.c
index c5c1334d3..1541727da 100644
--- a/components/log/log.c
+++ b/components/log/log.c
@@ -319,12 +319,13 @@ uint32_t esp_log_timestamp() __attribute__((alias("esp_log_early_timestamp")));
 
 #endif //BOOTLOADER_BUILD
 
-void esp_log_buffer_hex(const char *tag, const char *buffer, uint16_t buff_len)
+void esp_log_buffer_hex(const char *tag, const void *buffer, uint16_t buff_len)
 {
+    const char *as_bytes = (const char *)buffer;
     char temp_buffer[3*BYTES_PER_LINE + 1]= {0};
     int line_len = 0;
     for (int i = 0; i < buff_len; i++) {
-        line_len += sprintf(temp_buffer+line_len, "%02x ", buffer[i]);
+        line_len += sprintf(temp_buffer+line_len, "%02x ", as_bytes[i]);
         if (((i + 1) % BYTES_PER_LINE == 0) || (i == buff_len - 1)) {
             ESP_LOGI(tag, "%s", temp_buffer);
             line_len = 0;