diff --git a/interface/wx/aboutdlg.h b/interface/wx/aboutdlg.h
index 2751c1935c..04dec96403 100644
--- a/interface/wx/aboutdlg.h
+++ b/interface/wx/aboutdlg.h
@@ -146,6 +146,10 @@ public:
         any occurrences of @c "(C)" in @a copyright will be replaced by the
         copyright symbol (circled C) automatically, which means that you can avoid
         using this symbol in the program source code which can be problematic,
+
+        Also note that under MSW platform the word "Copyright" itself will be
+        removed from the string if it is followed by the copyright symbol, to
+        follow the platform convention.
     */
     void SetCopyright(const wxString& copyright);
 
diff --git a/samples/dialogs/dialogs.cpp b/samples/dialogs/dialogs.cpp
index d296f354c1..ca4a090e09 100644
--- a/samples/dialogs/dialogs.cpp
+++ b/samples/dialogs/dialogs.cpp
@@ -3407,7 +3407,7 @@ static void InitAboutInfoMinimal(wxAboutDialogInfo& info)
                         wxVERSION_NUM_DOT_STRING
                     ));
     info.SetDescription("This sample shows different wxWidgets dialogs.");
-    info.SetCopyright("(C) 1998-2023 wxWidgets dev team.");
+    info.SetCopyright("Copyright (C) 1998-2023 wxWidgets dev team.");
 }
 
 static void InitAboutInfoWebsite(wxAboutDialogInfo& info)
diff --git a/src/generic/aboutdlgg.cpp b/src/generic/aboutdlgg.cpp
index f97445e5ff..c25a708afa 100644
--- a/src/generic/aboutdlgg.cpp
+++ b/src/generic/aboutdlgg.cpp
@@ -102,6 +102,14 @@ wxString wxAboutDialogInfo::GetCopyrightToDisplay() const
     ret.Replace("(c)", copyrightSign);
     ret.Replace("(C)", copyrightSign);
 
+#ifdef __WXMSW__
+    // Under MSW the dialogs typically show only "(C)" and "Copyright (C)", but
+    // under other platforms dialogs do use the word "Copyright" too, so to
+    // make it simpler to do the right thing under all platforms, remove the
+    // extra word here.
+    ret.Replace("Copyright " + copyrightSign, copyrightSign);
+#endif // __WXMSW__
+
     return ret;
 }