diff --git a/src/common/log.cpp b/src/common/log.cpp
index cf52fe3a69..1e4db45ec6 100644
--- a/src/common/log.cpp
+++ b/src/common/log.cpp
@@ -597,7 +597,7 @@ void wxLogStream::DoLogString(const wxChar *szString, time_t WXUNUSED(t))
 {
     wxString str;
     TimeStamp(&str);
-    (*m_ostr) << wxConvertWX2MB(str) << wxConvertWX2MB(szString) << wxSTD endl;
+    (*m_ostr) << wxSafeConvertWX2MB(str) << wxSafeConvertWX2MB(szString) << wxSTD endl;
 }
 #endif // wxUSE_STD_IOSTREAM