diff --git a/SmartPtr.h b/SmartPtr.h
index 9f613fe..a8d4840 100644
--- a/SmartPtr.h
+++ b/SmartPtr.h
@@ -8,7 +8,7 @@
 //     purpose is hereby granted without fee, provided that the above copyright 
 //     notice appear in all copies and that both that copyright notice and this 
 //     permission notice appear in supporting documentation.
-// The author or Addison-Welsey Longman make no representations about the 
+// The author or Addison-Wesley Longman make no representations about the 
 //     suitability of this software for any purpose. It is provided "as is" 
 //     without express or implied warranty.
 ////////////////////////////////////////////////////////////////////////////////
@@ -32,6 +32,7 @@
 #include "static_check.h"
 #include <functional>
 #include <stdexcept>
+#include <cassert>
 
 namespace Loki
 {
@@ -1188,6 +1189,7 @@ namespace std
 ////////////////////////////////////////////////////////////////////////////////
 // Change log:
 // June 20, 2001: ported by Nick Thurn to gcc 2.95.3. Kudos, Nick!!!
+// December 09, 2001: Included <cassert>
 ////////////////////////////////////////////////////////////////////////////////
 
 #endif // SMARTPTR_INC_