diff --git a/include/asm-um/processor-generic.h b/include/asm-um/processor-generic.h
index 038ba6f..4d94049 100644
--- a/include/asm-um/processor-generic.h
+++ b/include/asm-um/processor-generic.h
@@ -89,7 +89,11 @@
 extern void release_thread(struct task_struct *);
 extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
 extern void dump_thread(struct pt_regs *regs, struct user *u);
-extern void prepare_to_copy(struct task_struct *tsk);
+
+static inline void prepare_to_copy(struct task_struct *tsk)
+{
+}
+
 
 extern unsigned long thread_saved_pc(struct task_struct *t);