diff --git a/mod_auth_mellon.conf b/mod_auth_mellon.conf
index 7b9b0ac8897216a1915dd16eea2cd91c06e2035d..cbcacde7e723679c70c72268d70b7b3fcafaa505 100644
--- a/mod_auth_mellon.conf
+++ b/mod_auth_mellon.conf
@@ -5,6 +5,7 @@
  MellonSPCertFile       /etc/apache2/saml2/sp.cert
  MellonSPMetadataFile   /etc/apache2/saml2/sp.xml
  MellonIdPMetadataFile  /etc/apache2/saml2/idp.xml
+ MellonSignatureMethod rsa-sha1
 </Location>
 
 <Location /admin >