diff --git a/src/platform/wxwidgets/loadsave.cpp b/src/platform/wxwidgets/loadsave.cpp
index e3e49a34..e6f2cf4f 100644
--- a/src/platform/wxwidgets/loadsave.cpp
+++ b/src/platform/wxwidgets/loadsave.cpp
@@ -70,7 +70,7 @@ filedialog_output_params show_filedialog(wxWindow* parent, const std::string& ti
 		d->SetFilename(towxstring(defaultname));
 	d->SetFilterIndex(p.default_type);
 	if(p.default_filename != "")
-		d->SetFilename(p.default_filename);
+		d->SetFilename(towxstring(p.default_filename));
 	if(d->ShowModal() == wxID_CANCEL)
 		throw canceled_exception();
 	std::string filename = tostdstring(d->GetPath());