diff --git a/include/asm-powerpc/prom.h b/include/asm-powerpc/prom.h
index 6e391c9..6720837 100644
--- a/include/asm-powerpc/prom.h
+++ b/include/asm-powerpc/prom.h
@@ -139,7 +139,7 @@
 
 /* For updating the device tree at runtime */
 extern void of_attach_node(struct device_node *);
-extern void of_detach_node(const struct device_node *);
+extern void of_detach_node(struct device_node *);
 
 /* Other Prototypes */
 extern void finish_device_tree(void);