Index: src/plugin/PluginWbPassThrough.h
===================================================================
--- a/src/plugin/PluginWbPassThrough.h
+++ b/src/plugin/PluginWbPassThrough.h
@@ -17,8 +17,8 @@
 	CComPtr<IInternetProtocol> m_pTargetProtocol;
 
   int GetContentTypeFromMimeType(CString mimeType);
-  int GetContentTypeFromURL(CString src);
-  int GetContentType(CString mimeType, std::wstring domain, CString src);
+  int GetContentTypeFromURL(std::wstring src);
+  int GetContentType(CString mimeType, std::wstring domain, std::wstring src);
 public:
 	BEGIN_COM_MAP(WBPassthruSink)
 		COM_INTERFACE_ENTRY(IHttpNegotiate)