diff --git a/include/wx/strconv.h b/include/wx/strconv.h
index 7b4b2255f3..050fbac84a 100644
--- a/include/wx/strconv.h
+++ b/include/wx/strconv.h
@@ -54,6 +54,9 @@ public:
     const wxCharBuffer cWC2WX(const wchar_t *psz) const { return cWC2MB(psz); }
     const wxWCharBuffer cWX2WC(const char *psz) const { return cMB2WC(psz); }
 #endif // Unicode/ANSI
+
+    // virtual dtor for any base class
+    virtual ~wxMBConv();
 };
 
 WXDLLEXPORT_DATA(extern wxMBConv) wxConvLibc;
@@ -115,7 +118,7 @@ public:
     virtual ~wxCSConv();
 
     wxCSConv& operator=(const wxCSConv& conv);
-    
+
     void LoadNow();
 
     virtual size_t MB2WC(wchar_t *buf, const char *psz, size_t n) const;
diff --git a/src/common/strconv.cpp b/src/common/strconv.cpp
index dafd61269a..7c861f9daf 100644
--- a/src/common/strconv.cpp
+++ b/src/common/strconv.cpp
@@ -188,6 +188,11 @@ static size_t decode_utf16(const wchar_t* input, wxUint32& output)
 
 #define IGNORE_LIBC 0
 
+wxMBConv::~wxMBConv()
+{
+    // nothing to do here
+}
+
 size_t wxMBConv::MB2WC(wchar_t *buf, const char *psz, size_t n) const
 {
 #if IGNORE_LIBC