diff --git a/wolfssl/wolfcrypt/wc_port.h b/wolfssl/wolfcrypt/wc_port.h index 4fbb3264e..0ef6c8637 100644 --- a/wolfssl/wolfcrypt/wc_port.h +++ b/wolfssl/wolfcrypt/wc_port.h @@ -284,7 +284,7 @@ #else /* MULTI_THREADED */ /* FREERTOS comes first to enable use of FreeRTOS Windows simulator only */ #if defined(FREERTOS) - #if ESP_IDF_VERSION_MAJOR >= 4 + #if defined(ESP_IDF_VERSION_MAJOR) && (ESP_IDF_VERSION_MAJOR >= 4) typedef SemaphoreHandle_t wolfSSL_Mutex; #else typedef xSemaphoreHandle wolfSSL_Mutex;