diff --git a/t/026_do-not-move-namespace-to-parent.t b/t/026_do-not-move-namespace-to-parent.t
new file mode 100644
index 0000000..0a93349
--- /dev/null
+++ b/t/026_do-not-move-namespace-to-parent.t
@@ -0,0 +1,113 @@
+use Test::More;
+
+use XML::Sig;
+use XML::LibXML;
+
+my $xml = <<'THIRDPARTY';
+<samlp:Response xmlns:samlp="urn:oasis:names:tc:SAML:2.0:protocol" xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion" Destination="http://localhost:8080/sales-post-sig/" ID="id-icPMMO3R5rLNKh3wK1PfEC24c-QPBDczJZuxVRU3" InResponseTo="ID_8dc4d086-f2eb-4413-aed9-db4512e1ea1c" IssueInstant="2014-10-05T10:32:20Z" Version="2.0">
+<saml:Issuer Format="urn:oasis:names:tc:SAML:2.0:nameid-format:entity">http://oam.convenios.gov.br:14100/oam/fed</saml:Issuer>
+<samlp:Status>
+<samlp:StatusCode Value="urn:oasis:names:tc:SAML:2.0:status:Success"/>
+</samlp:Status>
+<saml:Assertion ID="id-ogGh-dw-nasEHVC2YIU2-9jQf-bYHE-4c-ip4Ad6" IssueInstant="2014-10-05T10:32:20Z" Version="2.0">
+<saml:Issuer Format="urn:oasis:names:tc:SAML:2.0:nameid-format:entity">http://oam.convenios.gov.br:14100/oam/fed</saml:Issuer>
+<saml:Subject>
+<saml:NameID Format="urn:oasis:names:tc:SAML:2.0:nameid-format:transient" NameQualifier="http://oam.convenios.gov.br:14100/oam/fed" SPNameQualifier="http://localhost:8080/sales-post-sig/">id-KWKgL-WLpVBKBuqBOSa3fJ4Jq-xZLQzbL-t0Y7il</saml:NameID>
+<saml:SubjectConfirmation Method="urn:oasis:names:tc:SAML:2.0:cm:bearer">
+<saml:SubjectConfirmationData InResponseTo="ID_8dc4d086-f2eb-4413-aed9-db4512e1ea1c" NotOnOrAfter="2014-10-05T10:37:20Z" Recipient="http://localhost:8080/sales-post-sig/"/>
+</saml:SubjectConfirmation>
+</saml:Subject>
+<saml:Conditions NotBefore="2014-10-05T10:32:20Z" NotOnOrAfter="2014-10-05T10:37:20Z">
+<saml:AudienceRestriction>
+<saml:Audience>http://localhost:8080/sales-post-sig/</saml:Audience>
+</saml:AudienceRestriction>
+</saml:Conditions>
+<saml:AuthnStatement AuthnInstant="2014-10-05T10:32:20Z" SessionIndex="id-tGmYdxzyikqZVhZZp6uMTEdlampkB7TstvGh1bw2" SessionNotOnOrAfter="2014-10-05T11:32:20Z">
+<saml:AuthnContext>
+<saml:AuthnContextClassRef>ConveniosScheme</saml:AuthnContextClassRef>
+</saml:AuthnContext>
+</saml:AuthnStatement>
+</saml:Assertion>
+</samlp:Response>
+THIRDPARTY
+
+local $XML::LibXML::skipXMLDeclaration = $self->{ no_xml_declaration };
+my $orig = XML::LibXML->load_xml( string => $xml );
+my $oxc = XML::LibXML::XPathContext->new($orig);
+$oxc->registerNs('dsig', 'http://www.w3.org/2000/09/xmldsig#');
+$oxc->registerNs('saml', 'urn:oasis:names:tc:SAML:2.0:assertion');
+$oxc->registerNs('samlp', 'urn:oasis:names:tc:SAML:2.0:protocol');
+
+my $uri = qr/http\:\/\/www\.w3\.org\/2000\/09\/xmldsig\#/;
+
+my $attributes = get_attributes($oxc, '/samlp:Response/saml:Assertion');
+my ($names, $uris) = get_namespaces($attributes);
+
+ok(!grep ( /dsig/ , @{$names}), 'Did not find dsig in Original Assertion');
+my $p = grep ( $uri, @{$uris});
+ok(!grep ( /$uri/ , @{$uris}), 'Did not find http://www.w3.org/2000/09/xmldsig# in Original Assertion');
+
+$attributes = get_attributes($oxc, '/samlp:Response');
+($names, $uris) = get_namespaces($attributes);
+
+ok(!grep ( /dsig/ , @{$names}), 'Did not find dsig in Original Response');
+my $p = grep ( $uri, @{$uris});
+ok(!grep ( /$uri/ , @{$uris}), 'Did not find http://www.w3.org/2000/09/xmldsig# in Original Response');
+
+my $sig = XML::Sig->new(
+                    {
+                        key  => 't/rsa.private.key',
+                        cert => 't/rsa.cert.pem',
+                        id_attr => '//saml:Assertion'
+                    });
+
+my $signed = $sig->sign($xml);
+my $dom = XML::LibXML->load_xml( string => $signed );
+
+my $xc = XML::LibXML::XPathContext->new($dom);
+$xc->registerNs('dsig', 'http://www.w3.org/2000/09/xmldsig#');
+$xc->registerNs('saml', 'urn:oasis:names:tc:SAML:2.0:assertion');
+$xc->registerNs('samlp', 'urn:oasis:names:tc:SAML:2.0:protocol');
+
+$attributes = get_attributes($xc, '/samlp:Response/saml:Assertion');
+($names, $uris) = get_namespaces($attributes);
+
+ok(!grep ( /dsig/ , @{$names}), 'Did not find dsig in Assertion');
+my $p = grep ( $uri, @{$uris});
+ok(!grep ( /$uri/ , @{$uris}), 'Did not find http://www.w3.org/2000/09/xmldsig# in Assertion');
+
+$attributes = get_attributes($xc, '/samlp:Response');
+($names, $uris) = get_namespaces($attributes);
+
+ok(!grep ( /dsig/ , @{$names}), 'Did not find dsig in Response');
+my $p = grep ( $uri, @{$uris});
+ok(!grep ( /$uri/ , @{$uris}), 'Did not find http://www.w3.org/2000/09/xmldsig# in Response');
+
+sub get_attributes {
+    my $xpc   = shift;
+    my $xpath = shift;
+
+    my $nodes = $xpc->findnodes($xpath);
+    if ($nodes->size == 0) {
+        die "Unable to find a samlp:Response";
+    }
+
+    my $node = $nodes->get_node(1);
+
+    my @attributes = $node->attributes();
+    return \@attributes;
+}
+
+sub get_namespaces {
+    my $nslist = shift; 
+    my @localnames;
+    my @uri;
+    foreach my $ns (@{$nslist}){
+        next if (ref $ns ne 'XML::LibXML::Namespace');
+        push @localnames, $ns->getLocalName;
+        push @uri, $ns->getData();
+    }
+    return \@localnames, \@uri;
+}
+
+done_testing;