diff --git a/src/commodity.h b/src/commodity.h
index d5f18844..3370f3f2 100644
--- a/src/commodity.h
+++ b/src/commodity.h
@@ -185,7 +185,7 @@ protected:
 	symbol(_symbol), precision(0), searched(false) {
       TRACE_CTOR(base_t, "const string&");
     }
-    ~base_t() {
+    virtual ~base_t() {
       TRACE_DTOR(base_t);
     }
 
diff --git a/src/pool.h b/src/pool.h
index c3d701b9..85de73a9 100644
--- a/src/pool.h
+++ b/src/pool.h
@@ -84,7 +84,7 @@ public:
 
   explicit commodity_pool_t();
 
-  ~commodity_pool_t() {
+  virtual ~commodity_pool_t() {
     TRACE_DTOR(commodity_pool_t);
     foreach (commodities_map::value_type pair, commodities)
       checked_delete(pair.second);