diff --git a/src/common/plugin.h b/src/common/plugin.h
index df17ccc5c..3d28f7dd3 100644
--- a/src/common/plugin.h
+++ b/src/common/plugin.h
@@ -26,7 +26,7 @@ namespace OCC {
 class OCSYNC_EXPORT PluginFactory
 {
 public:
-    ~PluginFactory();
+    virtual ~PluginFactory();
     virtual QObject* create(QObject* parent) = 0;
 };