diff --git a/src/msw/crashrpt.cpp b/src/msw/crashrpt.cpp
index c9d45cb191..8f97402bc6 100644
--- a/src/msw/crashrpt.cpp
+++ b/src/msw/crashrpt.cpp
@@ -226,7 +226,9 @@ bool wxCrashReportImpl::Generate(int flags, EXCEPTION_POINTERS *ep)
     }
     else // dbghelp.dll couldn't be loaded
     {
-        Output(wxT("%s"), wxDbgHelpDLL::GetErrorMessage().c_str());
+        Output(wxT("%s"), static_cast<const wxChar*>(
+                    wxDbgHelpDLL::GetErrorMessage().c_str()
+              ));
     }
 #else // !wxUSE_DBGHELP
     wxUnusedVar(flags);