--- a/js/src/gdb/mozilla/Root.py
+++ b/js/src/gdb/mozilla/Root.py
@@ -59,17 +59,17 @@ class Rooted(Common):
 class Handle(Common):
     handle = True
 
 @template_pretty_printer("JS::MutableHandle")
 class MutableHandle(Common):
     handle = True
 
 @template_pretty_printer("js::BarrieredBase")
-class PreBarriered(Common):
+class BarrieredBase(Common):
     member = 'value'
 
 # Return the referent of a HeapPtr, Rooted, or Handle.
 def deref(root):
     tag = root.type.strip_typedefs().tag
     if not tag:
         raise TypeError("Can't dereference type with no structure tag: %s" % (root.type,))
     elif tag.startswith('js::HeapPtr<'):