diff --git a/arch/ia64/include/asm/topology.h b/arch/ia64/include/asm/topology.h
index 3ad8f6988363..82f9bf702804 100644
--- a/arch/ia64/include/asm/topology.h
+++ b/arch/ia64/include/asm/topology.h
@@ -33,13 +33,6 @@
 			       cpu_all_mask :				\
 			       &node_to_cpu_mask[node])
 
-/*
- * Returns the number of the node containing Node 'nid'.
- * Not implemented here. Multi-level hierarchies detected with
- * the help of node_distance().
- */
-#define parent_node(nid) (nid)
-
 /*
  * Determines the node for a given pci bus
  */