diff --git a/mozilla/xpfe/appshell/src/nsWebShellWindow.cpp b/mozilla/xpfe/appshell/src/nsWebShellWindow.cpp
index 499c3dd7078..df3b2b4af18 100644
--- a/mozilla/xpfe/appshell/src/nsWebShellWindow.cpp
+++ b/mozilla/xpfe/appshell/src/nsWebShellWindow.cpp
@@ -158,8 +158,6 @@ static NS_DEFINE_CID(kMenuItemCID,         NS_MENUITEM_CID);
 
 #define SIZE_PERSISTENCE_TIMEOUT 500 // msec
 
-const char * kPrimaryContentTypeValue  = "content-primary";
-
 struct ThreadedWindowEvent {
   PLEvent           event;
   nsWebShellWindow  *window;