diff --git a/example/Vulkan/DeferredRenderMultiCmdBuffer.cpp b/example/Vulkan/DeferredRenderMultiCmdBuffer.cpp
index e2df5329..2bf9596b 100644
--- a/example/Vulkan/DeferredRenderMultiCmdBuffer.cpp
+++ b/example/Vulkan/DeferredRenderMultiCmdBuffer.cpp
@@ -107,7 +107,6 @@ public:
         SAFE_CLEAR(render_list);
         SAFE_CLEAR(gbuffer.cmd);
         SAFE_CLEAR(gbuffer.rt);
-        SAFE_CLEAR(gbuffer.rp);
     }
 
 private:
diff --git a/example/Vulkan/OffscreenRender.cpp b/example/Vulkan/OffscreenRender.cpp
index 6ec433bc..d5a13ac7 100644
--- a/example/Vulkan/OffscreenRender.cpp
+++ b/example/Vulkan/OffscreenRender.cpp
@@ -39,7 +39,7 @@ class TestApp:public CameraAppFramework
             return(true);
         }
     }os;
-    
+
     struct:public RenderObject
     {
         Sampler *           sampler             =nullptr;
@@ -48,7 +48,7 @@ class TestApp:public CameraAppFramework
         RenderableInstance *renderable_instance =nullptr;
 
         SceneNode           scene_root;
-        RenderList          *render_list        =nullptr;
+        RenderList *        render_list         =nullptr;
     }cube;
 
 public:
@@ -56,7 +56,6 @@ public:
     ~TestApp()
     {
         SAFE_CLEAR(cube.render_list);
-        SAFE_CLEAR(os.pipeline);
         SAFE_CLEAR(os.render_taget);
     }
 
diff --git a/src/SceneGraph/Vulkan/VKDevice.cpp b/src/SceneGraph/Vulkan/VKDevice.cpp
index 5d12cca4..a80aa015 100644
--- a/src/SceneGraph/Vulkan/VKDevice.cpp
+++ b/src/SceneGraph/Vulkan/VKDevice.cpp
@@ -51,11 +51,11 @@ GPUDevice::GPUDevice(GPUDeviceAttribute *da)
 
 GPUDevice::~GPUDevice()
 {
+    ClearRenderPassManage();
+
     SAFE_CLEAR(swapchainRT);
     SAFE_CLEAR(swapchain);
 
-    ClearRenderPassManage();
-
     SAFE_CLEAR(texture_queue);
     SAFE_CLEAR(texture_cmd_buf);
 
diff --git a/src/SceneGraph/Vulkan/VKDeviceRenderPassManage.cpp b/src/SceneGraph/Vulkan/VKDeviceRenderPassManage.cpp
index afbc839d..976768ff 100644
--- a/src/SceneGraph/Vulkan/VKDeviceRenderPassManage.cpp
+++ b/src/SceneGraph/Vulkan/VKDeviceRenderPassManage.cpp
@@ -204,7 +204,7 @@ DeviceRenderPassManage::~DeviceRenderPassManage()
     {
         delete (*obj)->right;
 
-        ++obj;        
+        ++obj;
     }
 
     RenderPassList.Clear();