diff --git a/src/generic/progdlgg.cpp b/src/generic/progdlgg.cpp
index 23fbd709ec..31671f2b36 100644
--- a/src/generic/progdlgg.cpp
+++ b/src/generic/progdlgg.cpp
@@ -206,6 +206,9 @@ bool wxGenericProgressDialog::Create( const wxString& title,
     int gauge_style = wxGA_HORIZONTAL;
     if ( style & wxPD_SMOOTH )
         gauge_style |= wxGA_SMOOTH;
+#if wxUSE_TASKBARBUTTON
+    gauge_style |= wxGA_PROGRESS;
+#endif
 
 #ifdef __WXMSW__
     maximum /= m_factor;