diff --git a/components/esp32/esp_err_to_name.c b/components/esp32/esp_err_to_name.c
index b6743c31ea..a85eb0a9ca 100644
--- a/components/esp32/esp_err_to_name.c
+++ b/components/esp32/esp_err_to_name.c
@@ -473,7 +473,7 @@ const char *esp_err_to_name_r(esp_err_t code, char *buf, size_t buflen)
         return buf;
     }
 
-    snprintf(buf, buflen, "Unknown error %d", code);
+    snprintf(buf, buflen, "%s 0x%x(%d)", esp_unknown_msg, code, code);
 
     return buf;
 }
diff --git a/components/esp32/esp_err_to_name.c.in b/components/esp32/esp_err_to_name.c.in
index b6b87312e9..5f623c62dc 100644
--- a/components/esp32/esp_err_to_name.c.in
+++ b/components/esp32/esp_err_to_name.c.in
@@ -58,7 +58,7 @@ const char *esp_err_to_name_r(esp_err_t code, char *buf, size_t buflen)
         return buf;
     }
 
-    snprintf(buf, buflen, "Unknown error %d", code);
+    snprintf(buf, buflen, "%s 0x%x(%d)", esp_unknown_msg, code, code);
 
     return buf;
 }