1 files changed, 1 insertions, 0 deletions

diff --git a/src/stable/string.h b/src/stable/string.h
index c92a704..197821d 100644
--- a/src/stable/string.h
+++ b/src/stable/string.h
@@ -950,6 +950,7 @@ namespace Bu
                 class FormatProxyEndAction
                 {
                 public:
+                        virtual ~FormatProxyEndAction() { };
                         virtual void operator()( const Bu::String &sFinal )=0;
                 };