diff --git a/include/utils/RefBase.h b/include/utils/RefBase.h
index cbfe13a..ac1ac6c 100644
--- a/include/utils/RefBase.h
+++ b/include/utils/RefBase.h
@@ -484,7 +484,8 @@
                 TYPE::renameRefId(d[i].get(), &s[i], &d[i]);
             }
         public:
-            Renamer(sp<TYPE>* d, sp<TYPE> const* s) : s(s), d(d) { }
+            Renamer(sp<TYPE>* d, sp<TYPE> const* s) : d(d), s(s) { }
+            virtual ~Renamer() { }
         };
 
         memmove(d, s, n*sizeof(sp<TYPE>));
@@ -503,7 +504,8 @@
                 TYPE::renameRefId(d[i].get_refs(), &s[i], &d[i]);
             }
         public:
-            Renamer(wp<TYPE>* d, wp<TYPE> const* s) : s(s), d(d) { }
+            Renamer(wp<TYPE>* d, wp<TYPE> const* s) : d(d), s(s) { }
+            virtual ~Renamer() { }
         };
 
         memmove(d, s, n*sizeof(wp<TYPE>));