diff --git a/src/apps/debugger/debug_info/GlobalTypeLookup.h b/src/apps/debugger/debug_info/GlobalTypeLookup.h
index 544dea5502..22a5f1209f 100644
--- a/src/apps/debugger/debug_info/GlobalTypeLookup.h
+++ b/src/apps/debugger/debug_info/GlobalTypeLookup.h
@@ -45,7 +45,7 @@ private:
 
 class GlobalTypeLookup {
 public:
-								~GlobalTypeLookup();
+	virtual						~GlobalTypeLookup();
 
 	virtual	status_t			GetType(GlobalTypeLookupContext* context,
 									const BString& name, Type*& _type) = 0;