diff --git a/IDE/Espressif/ESP-IDF/examples/wolfssl_client/main/wifi_connect.c b/IDE/Espressif/ESP-IDF/examples/wolfssl_client/main/wifi_connect.c
index 262106b31..c9c87e368 100644
--- a/IDE/Espressif/ESP-IDF/examples/wolfssl_client/main/wifi_connect.c
+++ b/IDE/Espressif/ESP-IDF/examples/wolfssl_client/main/wifi_connect.c
@@ -78,7 +78,11 @@ static void set_time()
 static void tls_smp_client_init(void)
 {
     int ret;
-    TaskHandle_t _handle;
+    #if ESP_IDF_VERSION_MAJOR >= 4
+        TaskHandle_t _handle;
+    #else
+        xTaskHandle _handle;
+    #endif
     /* http://esp32.info/docs/esp_idf/html/dd/d3c/group__xTaskCreate.html */
     ret = xTaskCreate(tls_smp_client_task,
                       TLS_SMP_CLIENT_TASK_NAME,
diff --git a/wolfcrypt/benchmark/benchmark.c b/wolfcrypt/benchmark/benchmark.c
index f8fa1cc29..eda6ed287 100644
--- a/wolfcrypt/benchmark/benchmark.c
+++ b/wolfcrypt/benchmark/benchmark.c
@@ -8201,7 +8201,11 @@ void bench_sphincsKeySign(byte level, byte optim)
 #endif
     double current_time(int reset)
     {
+        #if ESP_IDF_VERSION_MAJOR >= 4
         TickType_t tickCount;
+        #else
+        portTickType tickCount;
+        #endif
 
         (void) reset;
 
diff --git a/wolfcrypt/src/port/Espressif/esp32_aes.c b/wolfcrypt/src/port/Espressif/esp32_aes.c
index abcfc8311..8aefd491f 100644
--- a/wolfcrypt/src/port/Espressif/esp32_aes.c
+++ b/wolfcrypt/src/port/Espressif/esp32_aes.c
@@ -157,7 +157,11 @@ static void esp_aes_hw_Set_KeyMode(Aes *ctx, ESP32_AESPROCESS mode)
 static void esp_aes_bk(const byte* in, byte* out)
 {
     const word32 *inwords = (const word32 *)in;
+    #if ESP_IDF_VERSION_MAJOR >= 4
     uint32_t *outwords      = (uint32_t *)out;
+    #else
+    word32 *outwords      = (word32 *)out;
+    #endif
 
     ESP_LOGV(TAG, "enter esp_aes_bk");
 
diff --git a/wolfcrypt/src/port/Espressif/esp32_sha.c b/wolfcrypt/src/port/Espressif/esp32_sha.c
index 3f6276500..f63ce5a70 100644
--- a/wolfcrypt/src/port/Espressif/esp32_sha.c
+++ b/wolfcrypt/src/port/Espressif/esp32_sha.c
@@ -551,7 +551,11 @@ int wc_esp_digest_state(WC_ESP32SHA* ctx, byte* hash)
      *    DPORT_SEQUENCE_REG_READ(address + i * 4);
      */
     esp_dport_access_read_buffer(
+        #if ESP_IDF_VERSION_MAJOR >= 4
         (uint32_t*)(hash), /* the result will be found in hash upon exit     */
+        #else
+        (word32*)(hash), /* the result will be found in hash upon exit     */
+        #endif
         SHA_TEXT_BASE,   /* there's a fixed reg addy for all SHA           */
         wc_esp_sha_digest_size(ctx->sha_type) / sizeof(word32) /* # 4-byte */
     );
diff --git a/wolfssl/wolfcrypt/wc_port.h b/wolfssl/wolfcrypt/wc_port.h
index 306692b64..256712230 100644
--- a/wolfssl/wolfcrypt/wc_port.h
+++ b/wolfssl/wolfcrypt/wc_port.h
@@ -202,7 +202,11 @@
 #else /* MULTI_THREADED */
     /* FREERTOS comes first to enable use of FreeRTOS Windows simulator only */
     #if defined(FREERTOS)
+        #if ESP_IDF_VERSION_MAJOR >= 4
         typedef SemaphoreHandle_t wolfSSL_Mutex;
+        #else
+        typedef xSemaphoreHandle wolfSSL_Mutex;
+        #endif
     #elif defined(FREERTOS_TCP)
         #include "FreeRTOS.h"
         #include "semphr.h"