1 files changed, 1 insertions, 1 deletions

diff --git a/src/hashfunctionstring.h b/src/hashfunctionstring.h
index 566f8ae..7d2a1a6 100644
--- a/src/hashfunctionstring.h
+++ b/src/hashfunctionstring.h
@@ -19,7 +19,7 @@ public:
         /**
          * Standard Deconstructor.
          */
-        ~HashFunctionString();
+        virtual ~HashFunctionString();
         unsigned long int hash( const void *id );
         bool cmpIDs( const void *id1, const void *id2 );
 };