diff --git a/content/xslt/src/xslt/txMozillaStylesheetCompiler.cpp b/content/xslt/src/xslt/txMozillaStylesheetCompiler.cpp
index ce4a07744b0b..3d60da9756cc 100644
--- a/content/xslt/src/xslt/txMozillaStylesheetCompiler.cpp
+++ b/content/xslt/src/xslt/txMozillaStylesheetCompiler.cpp
@@ -312,10 +312,9 @@ txStylesheetSink::OnStartRequest(nsIRequest *aRequest, nsISupports *aContext)
         nsCOMPtr<nsIStreamConverterService> serv =
             do_GetService("@mozilla.org/streamConverters;1", &rv);
         if (NS_SUCCEEDED(rv)) {
-            NS_ConvertASCIItoUCS2 from(UNKNOWN_CONTENT_TYPE);
             nsCOMPtr<nsIStreamListener> converter;
-            rv = serv->AsyncConvertData(from.get(),
-                                        NS_LITERAL_STRING("*/*").get(),
+            rv = serv->AsyncConvertData(UNKNOWN_CONTENT_TYPE,
+                                        "*/*",
                                         mListener,
                                         aContext,
                                         getter_AddRefs(converter));