diff --git a/lemur/common/utils.py b/lemur/common/utils.py
index f3ac5fe7..13e6e067 100644
--- a/lemur/common/utils.py
+++ b/lemur/common/utils.py
@@ -147,6 +147,7 @@ def generate_private_key(key_type):
 def check_cert_signature(cert, issuer_public_key):
     """
     Check a certificate's signature against an issuer public key.
+    Before EC validation, make sure we support the algorithm, otherwise raise UnsupportedAlgorithm
     On success, returns None; on failure, raises UnsupportedAlgorithm or InvalidSignature.
     """
     if isinstance(issuer_public_key, rsa.RSAPublicKey):
@@ -160,9 +161,10 @@ def check_cert_signature(cert, issuer_public_key):
         else:
             padder = padding.PKCS1v15()
         issuer_public_key.verify(cert.signature, cert.tbs_certificate_bytes, padder, cert.signature_hash_algorithm)
+    elif isinstance(issuer_public_key, ec.EllipticCurvePublicKey) and isinstance(ec.ECDSA(cert.signature_hash_algorithm), ec.ECDSA):
+            issuer_public_key.verify(cert.signature, cert.tbs_certificate_bytes, ec.ECDSA(cert.signature_hash_algorithm))
     else:
-        # EllipticCurvePublicKey or DSAPublicKey
-        issuer_public_key.verify(cert.signature, cert.tbs_certificate_bytes, cert.signature_hash_algorithm)
+        raise UnsupportedAlgorithm("Unsupported Algorithm '{var}'.".format(var=cert.signature_algorithm_oid._name))
 
 
 def is_selfsigned(cert):
diff --git a/lemur/tests/test_utils.py b/lemur/tests/test_utils.py
index 3e226f0f..74c11643 100644
--- a/lemur/tests/test_utils.py
+++ b/lemur/tests/test_utils.py
@@ -1,6 +1,6 @@
 import pytest
 
-from lemur.tests.vectors import SAN_CERT, INTERMEDIATE_CERT, ROOTCA_CERT
+from lemur.tests.vectors import SAN_CERT, INTERMEDIATE_CERT, ROOTCA_CERT, EC_CERT_EXAMPLE, ECDSA_PRIME256V1_CERT, ECDSA_SECP384r1_CERT, DSA_CERT
 
 
 def test_generate_private_key():
@@ -83,3 +83,11 @@ def test_is_selfsigned(selfsigned_cert):
     assert is_selfsigned(INTERMEDIATE_CERT) is False
     # Root CA certificates are also technically self-signed
     assert is_selfsigned(ROOTCA_CERT) is True
+    assert is_selfsigned(EC_CERT_EXAMPLE) is False
+
+    # selfsigned certs
+    assert is_selfsigned(ECDSA_PRIME256V1_CERT) is True
+    assert is_selfsigned(ECDSA_SECP384r1_CERT) is True
+    # unsupported algorithm (DSA)
+    with pytest.raises(Exception):
+        is_selfsigned(DSA_CERT)
diff --git a/lemur/tests/vectors.py b/lemur/tests/vectors.py
index 5da37c61..06e7445a 100644
--- a/lemur/tests/vectors.py
+++ b/lemur/tests/vectors.py
@@ -394,3 +394,98 @@ zm3Cn4Ul8DO26w9QS4fmZjmnPOZFXYMWoOR6osHzb62PWQ8FBMqXcdToBV2Q9Iw4
 PiFAxlc0tVjlLqQ=
 -----END CERTIFICATE REQUEST-----
 """
+
+
+EC_CERT_STR = """
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
+"""
+EC_CERT_EXAMPLE = parse_certificate(EC_CERT_STR)
+
+
+ECDSA_PRIME256V1_CERT_STR = """
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
+"""
+ECDSA_PRIME256V1_CERT = parse_certificate(ECDSA_PRIME256V1_CERT_STR)
+
+
+ECDSA_SECP384r1_CERT_STR = """
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
+"""
+ECDSA_SECP384r1_CERT = parse_certificate(ECDSA_SECP384r1_CERT_STR)
+
+DSA_CERT_STR = """
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
+"""
+DSA_CERT = parse_certificate(DSA_CERT_STR)