diff --git a/include/wx/msw/radiobut.h b/include/wx/msw/radiobut.h
index af598b9451..43a8e30e32 100644
--- a/include/wx/msw/radiobut.h
+++ b/include/wx/msw/radiobut.h
@@ -50,6 +50,8 @@ public:
     virtual void Command(wxCommandEvent& event);
     virtual bool HasTransparentBackground() { return true; }
 
+    virtual WXDWORD MSWGetStyle(long style, WXDWORD *exstyle) const;
+
 protected:
     virtual wxSize DoGetBestSize() const;
 
diff --git a/src/msw/radiobut.cpp b/src/msw/radiobut.cpp
index 61ab90ded2..dddab3e26a 100644
--- a/src/msw/radiobut.cpp
+++ b/src/msw/radiobut.cpp
@@ -314,4 +314,14 @@ wxSize wxRadioButton::DoGetBestSize() const
     return best;
 }
 
+WXDWORD wxRadioButton::MSWGetStyle(long style, WXDWORD *exstyle) const
+{
+    WXDWORD styleMSW = wxControl::MSWGetStyle(style, exstyle);
+
+    if ( style & wxRB_GROUP )
+        styleMSW |= WS_GROUP;
+
+    return styleMSW;
+}
+
 #endif // wxUSE_RADIOBTN