diff --git a/src/widgets/FileDialog/win/FileDialogPrivate.cpp b/src/widgets/FileDialog/win/FileDialogPrivate.cpp
index 255c287..43bd18b 100644
--- a/src/widgets/FileDialog/win/FileDialogPrivate.cpp
+++ b/src/widgets/FileDialog/win/FileDialogPrivate.cpp
@@ -78,10 +78,6 @@ static wxRect gs_rectDialog(0, 0, 428, 266);
 // implementation
 // ============================================================================
 
-IMPLEMENT_CLASS(FileDialog, wxFileDialogBase)
-
-// ----------------------------------------------------------------------------
-
 namespace
 {
 
diff --git a/src/widgets/FileDialog/win/FileDialogPrivate.h b/src/widgets/FileDialog/win/FileDialogPrivate.h
index dfc95d9..ce732eb 100644
--- a/src/widgets/FileDialog/win/FileDialogPrivate.h
+++ b/src/widgets/FileDialog/win/FileDialogPrivate.h
@@ -116,7 +116,6 @@ private:
       int mModalCount;
    } mDisabler;
 
-   DECLARE_DYNAMIC_CLASS(FileDialog)
    DECLARE_NO_COPY_CLASS(FileDialog)
 };