diff --git a/src/common/strconv.cpp b/src/common/strconv.cpp
index e515024035..b9a288345a 100644
--- a/src/common/strconv.cpp
+++ b/src/common/strconv.cpp
@@ -481,7 +481,7 @@ wxConvBrokenFileNames::wxConvBrokenFileNames(const wxChar *charset)
 {
     if ( !charset || wxStricmp(charset, _T("UTF-8")) == 0
                   || wxStricmp(charset, _T("UTF8")) == 0  )
-        m_conv = new wxMBConvUTF8(wxMBConvUTF8::MAP_INVALID_UTF8_TO_OCTAL);
+        m_conv = new wxMBConvUTF8(wxMBConvUTF8::MAP_INVALID_UTF8_TO_PUA);
     else
         m_conv = new wxCSConv(charset);
 }