diff --git a/src/cryptoki.hxx b/src/cryptoki.hxx
index f471a38..b9c753d 100644
--- a/src/cryptoki.hxx
+++ b/src/cryptoki.hxx
@@ -2015,7 +2015,10 @@ namespace cryptoki {
       Attribute attribute(CK_ATTRIBUTE_TYPE a) {
         CRYPTOLOG("log");
         Attribute res;
-        CK_ATTRIBUTE attr(CK_ATTRIBUTE{a, 0, 0});
+        CK_ATTRIBUTE attr;
+        attr.type = a;
+        attr.pValue = 0:
+        attr.ulValueLen = 0;
         //! calls @c C_GetAttributeValue
         if (!check(_session._slot.library()->C_GetAttributeValue
                    (_session._session, _object, &attr, 1),
@@ -2139,7 +2142,10 @@ namespace cryptoki {
         CK_ATTRIBUTE attr;
         for (AttributeTypeList::const_iterator it(attrs.begin());
              it!=attrs.end(); ++it) {
-          attr = CK_ATTRIBUTE{*it, 0, 0};
+          CK_ATTRIBUTE attr;
+          attr.type = *it;
+          attr.pValue = 0:
+          attr.ulValueLen = 0;
           try {
             //! calls @c C_GetAttributeValue
             if (_session._slot.library()->C_GetAttributeValue