diff --git a/src/generic/infobar.cpp b/src/generic/infobar.cpp
index 5da86013d5..dcaac0c878 100644
--- a/src/generic/infobar.cpp
+++ b/src/generic/infobar.cpp
@@ -302,8 +302,14 @@ void wxInfoBarGeneric::AddButton(wxWindowID btnid, const wxString& label)
         m_button->Hide();
     }
 
-    sizer->Add(new wxButton(this, btnid, label),
-               wxSizerFlags().Centre().DoubleBorder());
+    wxButton * const button = new wxButton(this, btnid, label);
+
+#ifdef __WXMAC__
+    // smaller buttons look better in the (narrow) info bar under OS X
+    button->SetWindowVariant(wxWINDOW_VARIANT_SMALL);
+#endif // __WXMAC__
+
+    sizer->Add(button, wxSizerFlags().Centre().DoubleBorder());
 }
 
 void wxInfoBarGeneric::RemoveButton(wxWindowID btnid)