diff --git a/XG_CandsWnd.hpp b/XG_CandsWnd.hpp
index 989a970..48f90ba 100644
--- a/XG_CandsWnd.hpp
+++ b/XG_CandsWnd.hpp
@@ -231,12 +231,12 @@ class XG_CandsWnd : public XG_Window
     {
     }
 
-    virtual LPCTSTR GetWndClassName() const
+    LPCTSTR GetWndClassName() const override
     {
         return TEXT("XG_CandsWnd");
     }
 
-    virtual void ModifyWndClassDx(WNDCLASSEX& wcx)
+    void ModifyWndClassDx(WNDCLASSEX& wcx) override
     {
         wcx.hIcon = nullptr;
         wcx.hbrBackground = ::CreateSolidBrush(RGB(255, 255, 192));
@@ -474,8 +474,8 @@ class XG_CandsWnd : public XG_Window
         }
     }
 
-    virtual LRESULT CALLBACK
-    WindowProcDx(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
+    LRESULT CALLBACK
+    WindowProcDx(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) override
     {
         switch (uMsg) {
         HANDLE_MSG(hwnd, WM_CREATE, OnCreate);
diff --git a/XG_CanvasWindow.hpp b/XG_CanvasWindow.hpp
index 38cbfd4..7a8668f 100644
--- a/XG_CanvasWindow.hpp
+++ b/XG_CanvasWindow.hpp
@@ -522,7 +522,7 @@ class XG_CanvasWindow : public XG_Window
         return XgOnLoad(xg_hMainWnd, szFile, &pt);
     }
 
-    virtual LRESULT CALLBACK
+    LRESULT CALLBACK
     WindowProcDx(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) override
     {
         switch (uMsg)
diff --git a/XG_HintsWnd.hpp b/XG_HintsWnd.hpp
index fddbeb1..8354a19 100644
--- a/XG_HintsWnd.hpp
+++ b/XG_HintsWnd.hpp
@@ -163,12 +163,12 @@ class XG_HintsWnd : public XG_Window
     {
     }
 
-    virtual LPCTSTR GetWndClassName() const
+    LPCTSTR GetWndClassName() const override
     {
         return TEXT("XG_HintsWnd");
     }
 
-    virtual void ModifyWndClassDx(WNDCLASSEX& wcx)
+    void ModifyWndClassDx(WNDCLASSEX& wcx) override
     {
         // No change
     }