diff --git a/tools/binpac/lib/binpac.h.in b/tools/binpac/lib/binpac.h.in
index 8d7c137d7b..f5c6e152c7 100644
--- a/tools/binpac/lib/binpac.h.in
+++ b/tools/binpac/lib/binpac.h.in
@@ -150,6 +150,7 @@ class RefCount
 {
 public:
 	RefCount() 	{ count = 1; }
+	virtual ~RefCount() {}
 	void Ref() 	{ ++count; }
 	int Unref() 	{ BINPAC_ASSERT(count > 0); return --count; }