diff --git a/bibletime/backend/cswordmoduleinfo.h b/bibletime/backend/cswordmoduleinfo.h
index c9a9960..9d4404e 100644
--- a/bibletime/backend/cswordmoduleinfo.h
+++ b/bibletime/backend/cswordmoduleinfo.h
@@ -27,6 +27,11 @@
 #include <swversion.h>
 #include <swdisp.h>
 
+#ifdef CLUCENE_V2
+// CLucene no longer lists the following functions in its headers
+extern size_t lucene_utf8towcs(wchar_t *, const char *,  size_t maxslen);
+extern size_t lucene_wcstoutf8 (char *,  const wchar_t *, size_t maxslen);
+#endif // CLUCENE_V2
 
 class CSwordBackend;