diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index bdcd23d8d8b9..a38197b12d3e 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -1218,7 +1218,7 @@ void of_attach_node(struct device_node *np)
  * a reference to the node.  The memory associated with the node
  * is not freed until its refcount goes to zero.
  */
-void of_detach_node(const struct device_node *np)
+void of_detach_node(struct device_node *np)
 {
 	struct device_node *parent;
 
diff --git a/include/asm-powerpc/prom.h b/include/asm-powerpc/prom.h
index 6e391c9894ce..672083787a1d 100644
--- a/include/asm-powerpc/prom.h
+++ b/include/asm-powerpc/prom.h
@@ -139,7 +139,7 @@ extern unsigned long __init of_get_flat_dt_root(void);
 
 /* 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);