diff --git a/tests/suites/test_suite_x509parse.data b/tests/suites/test_suite_x509parse.data
index 365a58c..e6d2c53 100644
--- a/tests/suites/test_suite_x509parse.data
+++ b/tests/suites/test_suite_x509parse.data
@@ -3309,7 +3309,7 @@
 depends_on:MBEDTLS_MD_CAN_SHA256:MBEDTLS_RSA_C
 x509_crt_parse_subjectkeyid:"data_files/authorityKeyId_subjectKeyId_tag_malformed.crt.der":"":MBEDTLS_ERR_X509_INVALID_EXTENSIONS+MBEDTLS_ERR_ASN1_UNEXPECTED_TAG
 
-X509 CRT parse Subject Key Id - Wrong OCTET_STRING tag
+X509 CRT parse Subject Key Id - Wrong OCTET_STRING length
 depends_on:MBEDTLS_MD_CAN_SHA256:MBEDTLS_RSA_C
 x509_crt_parse_subjectkeyid:"data_files/authorityKeyId_subjectKeyId_tag_len_malformed.crt.der":"":MBEDTLS_ERR_X509_INVALID_EXTENSIONS+MBEDTLS_ERR_ASN1_LENGTH_MISMATCH
 
@@ -3321,9 +3321,9 @@
 depends_on:MBEDTLS_MD_CAN_SHA256:MBEDTLS_RSA_C
 x509_crt_parse_authoritykeyid:"data_files/authorityKeyId_no_keyid.crt.der":"":"NL/PolarSSL/PolarSSL Test CA/":"7581F2D168FE33F964F0AE5FE884FAD3C55F24DA":0
 
-X509 CRT parse Authority Key Id - Correct Authority Key ID (no issuer and serial)
+X509 CRT parse Authority Key Id - no Authority Key ID
 depends_on:MBEDTLS_MD_CAN_SHA256:MBEDTLS_RSA_C
-x509_crt_parse_authoritykeyid:"data_files/authorityKeyId_no_issuer_serial.crt.der":"A505E864B8DCDF600F50124D60A864AF4D8B4393":"":"":0
+x509_crt_parse_authoritykeyid:"data_files/authorityKeyId_no_authorityKeyId.crt.der":"":"":"":0
 
 X509 CRT parse Authority Key Id - Correct Authority Key ID (empty)
 depends_on:MBEDTLS_MD_CAN_SHA256:MBEDTLS_RSA_C
@@ -3345,11 +3345,11 @@
 depends_on:MBEDTLS_MD_CAN_SHA256:MBEDTLS_RSA_C
 x509_crt_parse_authoritykeyid:"data_files/authorityKeyId_subjectKeyId_keyid_tag_len_malformed.crt.der":"":"":"":MBEDTLS_ERR_X509_INVALID_EXTENSIONS+MBEDTLS_ERR_ASN1_INVALID_LENGTH
 
-X509 CRT parse Authority Key Id - Wrong Issuer Tag 1
+X509 CRT parse Authority Key Id - Wrong Issuer Tag
 depends_on:MBEDTLS_MD_CAN_SHA256:MBEDTLS_RSA_C
 x509_crt_parse_authoritykeyid:"data_files/authorityKeyId_subjectKeyId_issuer_tag1_malformed.crt.der":"":"":"":MBEDTLS_ERR_X509_INVALID_EXTENSIONS+MBEDTLS_ERR_ASN1_UNEXPECTED_TAG
 
-X509 CRT parse Authority Key Id - Wrong Issuer Tag 2
+X509 CRT parse Authority Key Id - Wrong DirectoryName tag in issuer field
 depends_on:MBEDTLS_MD_CAN_SHA256:MBEDTLS_RSA_C
 x509_crt_parse_authoritykeyid:"data_files/authorityKeyId_subjectKeyId_issuer_tag2_malformed.crt.der":"":"":"":MBEDTLS_ERR_X509_INVALID_EXTENSIONS+MBEDTLS_ERR_ASN1_UNEXPECTED_TAG
 
diff --git a/tests/suites/test_suite_x509parse.function b/tests/suites/test_suite_x509parse.function
index 4c938b3..7163632 100644
--- a/tests/suites/test_suite_x509parse.function
+++ b/tests/suites/test_suite_x509parse.function
@@ -1549,7 +1549,7 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE depends_on:MBEDTLS_X509_CRT_PARSE_C */
+/* BEGIN_CASE depends_on:MBEDTLS_X509_CRT_PARSE_C:MBEDTLS_FS_IO */
 void x509_crt_parse_subjectkeyid(char *file, data_t *subjectKeyId, int ref_ret)
 {
     mbedtls_x509_crt crt;
@@ -1572,7 +1572,7 @@
 }
 /* END_CASE */
 
-/* BEGIN_CASE depends_on:MBEDTLS_X509_CRT_PARSE_C */
+/* BEGIN_CASE depends_on:MBEDTLS_X509_CRT_PARSE_C:MBEDTLS_FS_IO */
 void x509_crt_parse_authoritykeyid(char *file,
                                    data_t* keyId,
                                    char *authorityKeyId_issuer,
@@ -1592,15 +1592,19 @@
 
     if (ref_ret == 0) {
         /* KeyId test */
-        if (crt.authority_key_id.keyIdentifier.len > 0)
+        if (keyId->len > 0)
         {
             TEST_EQUAL(crt.authority_key_id.keyIdentifier.tag, MBEDTLS_ASN1_OCTET_STRING);
             TEST_EQUAL(memcmp(crt.authority_key_id.keyIdentifier.p, keyId->x, keyId->len), 0);
             TEST_EQUAL(crt.authority_key_id.keyIdentifier.len, keyId->len);
+        } else {
+            TEST_EQUAL(crt.authority_key_id.keyIdentifier.tag, 0);
+            TEST_EQUAL(crt.authority_key_id.keyIdentifier.len, 0);
         }
 
+
         /* Issuer test */
-        if (crt.authority_key_id.authorityCertIssuer.buf.len > 0)
+        if (strlen(authorityKeyId_issuer) > 0)
         {
             mbedtls_x509_sequence *issuerPtr = &crt.authority_key_id.authorityCertIssuer;
 
@@ -1621,13 +1625,16 @@
         }
 
         /* Serial test */
-        if (crt.authority_key_id.authorityCertSerialNumber.len > 0)
+        if (serial->len > 0)
         {
             TEST_EQUAL(crt.authority_key_id.authorityCertSerialNumber.tag,
                         MBEDTLS_ASN1_INTEGER);
             TEST_EQUAL(memcmp(crt.authority_key_id.authorityCertSerialNumber.p,
                             serial->x, serial->len), 0);
             TEST_EQUAL(crt.authority_key_id.authorityCertSerialNumber.len, serial->len);
+        } else {
+            TEST_EQUAL(crt.authority_key_id.authorityCertSerialNumber.tag, 0);
+            TEST_EQUAL(crt.authority_key_id.authorityCertSerialNumber.len, 0);
         }
 
     } else {