diff --git a/src/openssl-engine.hxx b/src/openssl-engine.hxx
index c96a7ee..5b40e0c 100644
--- a/src/openssl-engine.hxx
+++ b/src/openssl-engine.hxx
@@ -172,6 +172,7 @@ namespace openssl {
       }
 
       static void remove(Engine *e) {
+        OPENSSL_LOG("log");
         OPENSSL_CHECK(ENGINE_remove(e->_e));
         OPENSSL_CHECK(ENGINE_finish(e->_e));
         _map.erase(e->_e);
@@ -288,24 +289,30 @@ namespace openssl {
   template <class ENGINE=Engine> class RegisterEngine {
     public:
       RegisterEngine(ENGINE* e = 0): _e(e) {
+        OPENSSL_LOG("log");
         if (_e) EngineMapper::add(_e);
       }
       ~RegisterEngine() {
+        OPENSSL_LOG("log");
         if (_e) EngineMapper::remove(_e);
       }
       RegisterEngine& operator=(ENGINE* e) {
+        OPENSSL_LOG("log");
         if (_e) EngineMapper::remove(_e);
         _e = e;
         if (_e) EngineMapper::add(_e);
         return *this;
       }
       operator ENGINE*() {
+        OPENSSL_LOG("log");
         return _e;
       }
        ENGINE* operator->() {
+        OPENSSL_LOG("log");
         return _e;
       }
        ENGINE& operator*() {
+        OPENSSL_LOG("log");
         return *_e;
       }
     private: