diff --git a/arch/metag/include/asm/prom.h b/arch/metag/include/asm/prom.h
index ccac97e865d0..d2aa35d2228e 100644
--- a/arch/metag/include/asm/prom.h
+++ b/arch/metag/include/asm/prom.h
@@ -19,6 +19,5 @@
 
 extern struct machine_desc *setup_machine_fdt(void *dt);
 extern void copy_fdt(void);
-extern void metag_dt_memblock_reserve(void);
 
 #endif /* __ASM_METAG_PROM_H */