diff --git a/DOCBparser.c b/DOCBparser.c
index ddb08a2..33f5255 100644
--- a/DOCBparser.c
+++ b/DOCBparser.c
@@ -6025,7 +6025,8 @@
     }
     memset(inputStream, 0, sizeof(docbParserInput));
 
-    inputStream->filename = xmlNormalizeWindowsPath(filename);
+    inputStream->filename = (char *)
+	xmlNormalizeWindowsPath((const xmlChar *)filename);
     inputStream->line = 1;
     inputStream->col = 1;
     inputStream->buf = buf;