diff --git a/mozilla/content/html/document/src/nsHTMLDocument.cpp b/mozilla/content/html/document/src/nsHTMLDocument.cpp
index 5a1ba189edf..02b25b48cc4 100644
--- a/mozilla/content/html/document/src/nsHTMLDocument.cpp
+++ b/mozilla/content/html/document/src/nsHTMLDocument.cpp
@@ -159,7 +159,6 @@ const PRInt32 kBackward = 1;
 
 #define ELEMENT_NOT_IN_TABLE ((nsIContent *)1)
 
-static NS_DEFINE_CID(kIOServiceCID, NS_IOSERVICE_CID);
 static NS_DEFINE_CID(kCookieServiceCID, NS_COOKIESERVICE_CID);
 
 static NS_DEFINE_CID(kRDFServiceCID, NS_RDFSERVICE_CID);