diff --git a/mozilla/security/manager/ssl/src/nsNSSCertificate.h b/mozilla/security/manager/ssl/src/nsNSSCertificate.h
index 13522b7e594..73bb9317e99 100644
--- a/mozilla/security/manager/ssl/src/nsNSSCertificate.h
+++ b/mozilla/security/manager/ssl/src/nsNSSCertificate.h
@@ -72,7 +72,7 @@ public:
   NS_DECL_NSIX509CERTDB
 
   nsNSSCertificateDB(); 
-  ~nsNSSCertificateDB();
+  virtual ~nsNSSCertificateDB();
 
 private: