diff --git a/tests/suites/test_suite_entropy.data b/tests/suites/test_suite_entropy.data
index b2d20b4..bc077f8 100644
--- a/tests/suites/test_suite_entropy.data
+++ b/tests/suites/test_suite_entropy.data
@@ -7,6 +7,9 @@
 Entropy write/update seed file: nonexistent
 entropy_seed_file:"no_such_dir/file":MBEDTLS_ERR_ENTROPY_FILE_IO_ERROR
 
+Entropy write/update seed file: base NV seed file
+entropy_write_base_seed_file:0
+
 Entropy no sources
 entropy_no_sources:
 
diff --git a/tests/suites/test_suite_entropy.function b/tests/suites/test_suite_entropy.function
index d9ea441..a453aad 100644
--- a/tests/suites/test_suite_entropy.function
+++ b/tests/suites/test_suite_entropy.function
@@ -149,6 +149,21 @@
 }
 /* END_CASE */
 
+/* BEGIN_CASE depends_on:MBEDTLS_ENTROPY_NV_SEED:MBEDTLS_FS_IO */
+void entropy_write_base_seed_file( int ret )
+{
+    mbedtls_entropy_context ctx;
+
+    mbedtls_entropy_init( &ctx );
+
+    TEST_ASSERT( mbedtls_entropy_write_seed_file( &ctx, MBEDTLS_PLATFORM_STD_NV_SEED_FILE ) == ret );
+    TEST_ASSERT( mbedtls_entropy_update_seed_file( &ctx, MBEDTLS_PLATFORM_STD_NV_SEED_FILE ) == ret );
+
+exit:
+    mbedtls_entropy_free( &ctx );
+}
+/* END_CASE */
+
 /* BEGIN_CASE */
 void entropy_no_sources( )
 {