diff --git a/app/include/user_mbedtls.h b/app/include/user_mbedtls.h
index 3fa47eb2..6a43ecbd 100644
--- a/app/include/user_mbedtls.h
+++ b/app/include/user_mbedtls.h
@@ -295,7 +295,7 @@ extern void mbedtls_free_wrap(void *p);
 //#define MBEDTLS_PLATFORM_TIME_MACRO            time /**< Default time macro to use, can be undefined. MBEDTLS_HAVE_TIME must be enabled */
 //#define MBEDTLS_PLATFORM_TIME_TYPE_MACRO       time_t /**< Default time macro to use, can be undefined. MBEDTLS_HAVE_TIME must be enabled */
 //#define MBEDTLS_PLATFORM_FPRINTF_MACRO      fprintf /**< Default fprintf macro to use, can be undefined */
-#define MBEDTLS_PLATFORM_PRINTF_MACRO        ets_printf /**< Default printf macro to use, can be undefined */
+//#define MBEDTLS_PLATFORM_PRINTF_MACRO        ets_printf /**< Default printf macro to use, can be undefined */
 //#define MBEDTLS_PLATFORM_SNPRINTF_MACRO    ets_snprintf /**< Default snprintf macro to use, can be undefined */
 //#define MBEDTLS_PLATFORM_VSNPRINTF_MACRO    ets_vsnprintf /**< Default vsnprintf macro to use, can be undefined */
 //#define MBEDTLS_PLATFORM_NV_SEED_READ_MACRO   mbedtls_platform_std_nv_seed_read /**< Default nv_seed_read function to use, can be undefined */