diff --git a/example/Vulkan/VKVertexInput.h b/example/Vulkan/VKVertexInput.h
index 4bc94b80..2a209db2 100644
--- a/example/Vulkan/VKVertexInput.h
+++ b/example/Vulkan/VKVertexInput.h
@@ -33,6 +33,9 @@ class VertexInput
 
 public:
 
+    VertexInput()=default;
+    virtual ~VertexInput()=default;
+
     bool Add(VertexBuffer *,bool instance=false);
 
 public: