diff --git a/src/saml2/entity.py b/src/saml2/entity.py
index 56cc321..3c85d77 100644
--- a/src/saml2/entity.py
+++ b/src/saml2/entity.py
@@ -127,7 +127,8 @@ class Entity(HTTPBase):
             if _val.startswith("http"):
                 r = requests.request("GET", _val)
                 if r.status_code == 200:
-                    setattr(self.config, item, r.text)
+                    _, filename = make_temp(r.text, ".pem", False)
+                    setattr(self.config, item, filename)
                 else:
                     raise Exception(
                         "Could not fetch certificate from %s" % _val)
diff --git a/src/saml2/sigver.py b/src/saml2/sigver.py
index 1924cee..abb1c1b 100644
--- a/src/saml2/sigver.py
+++ b/src/saml2/sigver.py
@@ -35,7 +35,6 @@ from Crypto.PublicKey import RSA
 from saml2.cert import OpenSSLWrapper
 from saml2.extension import pefim
 from saml2.saml import EncryptedAssertion
-from saml2.samlp import Response
 
 import xmldsig as ds