diff --git a/tests/data_files/ec_prv.specdom.der b/tests/data_files/ec_prv.specdom.der
new file mode 100644
index 0000000..a80a2e3
--- /dev/null
+++ b/tests/data_files/ec_prv.specdom.der
Binary files differ
diff --git a/tests/suites/test_suite_pkparse.data b/tests/suites/test_suite_pkparse.data
index dc13fdb..b502017 100644
--- a/tests/suites/test_suite_pkparse.data
+++ b/tests/suites/test_suite_pkparse.data
@@ -198,6 +198,10 @@
 depends_on:POLARSSL_PEM_PARSE_C:POLARSSL_ECP_C:POLARSSL_ECP_DP_BP512R1_ENABLED
 pk_parse_keyfile_ec:"data_files/ec_bp512_prv.pem":"NULL":0
 
+Parse EC Key #15 (SEC1 DER, secp256k1, SpecifiedECDomain)
+depends_on:POLARSSL_PEM_PARSE_C:POLARSSL_ECP_C:POLARSSL_ECP_DP_SECP256K1_ENABLED:POLARSSL_PK_PARSE_EC_EXTENDED
+pk_parse_keyfile_ec:"data_files/ec_prv.specdom.der":"NULL":0
+
 Key ASN1 (Incorrect first tag)
 pk_parse_key_rsa:"":"":POLARSSL_ERR_PK_KEY_INVALID_FORMAT