diff --git a/components/mbedtls/test_apps/main/test_sha.c b/components/mbedtls/test_apps/main/test_sha.c
index 68aeea941e..5a314514bb 100644
--- a/components/mbedtls/test_apps/main/test_sha.c
+++ b/components/mbedtls/test_apps/main/test_sha.c
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2021-2023 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Apache-2.0
  */
@@ -130,6 +130,9 @@ TEST_CASE("Test esp_sha() function with long input", "[hw_crypto]")
     TEST_ASSERT_EQUAL(0, r);
 #endif
 
+    /* munmap() 1MB of flash when the usge of memory-mapped ptr is over */
+    spi_flash_munmap(handle);
+
     TEST_ASSERT_EQUAL_MEMORY_MESSAGE(sha1_espsha, sha1_mbedtls, sizeof(sha1_espsha), "SHA1 results should match");
 
     TEST_ASSERT_EQUAL_MEMORY_MESSAGE(sha256_espsha, sha256_mbedtls, sizeof(sha256_espsha), "SHA256 results should match");