diff --git a/example/Vulkan/VKShaderModuleManage.cpp b/example/Vulkan/VKShaderModuleManage.cpp
index 09eabaae..a706e257 100644
--- a/example/Vulkan/VKShaderModuleManage.cpp
+++ b/example/Vulkan/VKShaderModuleManage.cpp
@@ -6,6 +6,23 @@
 #include"VKShaderParse.h"
 
 VK_NAMESPACE_BEGIN
+ShaderModuleManage::~ShaderModuleManage()
+{
+    const int count=shader_list.GetCount();
+
+    if(count>0)
+    {
+        auto **p=shader_list.GetDataList();
+
+        for(int i=0;i<count;i++)
+        {
+            delete (*p)->right;
+
+            ++p;
+        }
+    }
+}
+
 const ShaderModule *ShaderModuleManage::CreateShader(const VkShaderStageFlagBits shader_stage_bit,const void *spv_data,const uint32_t spv_size)
 {
     VkPipelineShaderStageCreateInfo *shader_stage=new VkPipelineShaderStageCreateInfo;
@@ -85,7 +102,7 @@ bool ShaderModuleManage::ReleaseShader(const ShaderModule *const_sm)
     return(true);
 }
 
-const Material *ShaderModuleManage::CreateMaterial(const VertexShaderModule *vertex_shader_module,const ShaderModule *fragment_shader_module)const
+Material *ShaderModuleManage::CreateMaterial(const VertexShaderModule *vertex_shader_module,const ShaderModule *fragment_shader_module)const
 {
     if(!vertex_shader_module||!fragment_shader_module)
         return(nullptr);
diff --git a/example/Vulkan/VKShaderModuleManage.h b/example/Vulkan/VKShaderModuleManage.h
index 95aafd44..6813b016 100644
--- a/example/Vulkan/VKShaderModuleManage.h
+++ b/example/Vulkan/VKShaderModuleManage.h
@@ -58,8 +58,8 @@ public:
     const ShaderModule *GetShader       (int);
     bool                ReleaseShader   (const ShaderModule *);
 
-    const Material *    CreateMaterial(const VertexShaderModule *vertex_shader_module,const ShaderModule *fragment_shader_module)const;
-    const Material *    CreateMaterial(const UTF8String &vertex_shader_filename,const UTF8String &fragment_shader_filename)
+    Material *    CreateMaterial(const VertexShaderModule *vertex_shader_module,const ShaderModule *fragment_shader_module)const;
+    Material *    CreateMaterial(const UTF8String &vertex_shader_filename,const UTF8String &fragment_shader_filename)
     {
         const ShaderModule *vs=CreateShader(VK_SHADER_STAGE_VERTEX_BIT,vertex_shader_filename);