--- a/gfx/2d/2D.h
+++ b/gfx/2d/2D.h
@@ -612,17 +612,17 @@ public:
 };
 
 class PathBuilder;
 class FlattenedPath;
 
 /** The path class is used to create (sets of) figures of any shape that can be
  * filled or stroked to a DrawTarget
  */
-class Path : public RefCounted<Path>
+class Path : public external::AtomicRefCounted<Path>
 {
 public:
   MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(Path)
   virtual ~Path();
 
   virtual BackendType GetBackendType() const = 0;
 
   /** This returns a PathBuilder object that contains a copy of the contents of