diff --git a/src/cryptoki.cxx b/src/cryptoki.cxx
index 17c4388..17de833 100644
--- a/src/cryptoki.cxx
+++ b/src/cryptoki.cxx
@@ -228,11 +228,13 @@ namespace cryptoki {
         
   SlotList Library::slotList(bool tokenPresent, std::string name) {
     CRYPTOLOG("log");
+    CRYPTOLOG("looking for card name: ")<<name<<(tokenPresent?" with token":"");
     SlotList res;
     CK_ULONG count(0);
     //! calls @c C_GetSlotList
     _init->check(_init->_fn->C_GetSlotList(tokenPresent?TRUE:FALSE, 0, &count),
                  CRYPTOKI_FN_LOG("C_GetSlotList"));
+    CRYPTOLOG("found ")<<count<<" readers, result: "<<(*this?"success":"error");
     if (!count || !*this) return res;
     CK_SLOT_ID* slots = 0;
     try {
@@ -246,8 +248,11 @@ namespace cryptoki {
       if (!*this) return res;
       for (CK_ULONG i(0); i<count; ++i) {
         Slot s(*this, slots[i]);
-        if (!name.size() || name==s.slotinfo().slotDescription)
+        CRYPTOLOG("found slot ")<<s.slotinfo().slotDescription;
+        if (!name.size() || name==s.slotinfo().slotDescription) {
+          CRYPTOLOG("-> slot matches");
           res.push_back(s);
+        }
       }
     } catch (...) {
       delete[] slots;