diff --git a/init/main.c b/init/main.c
index 3f1f4e4..2fd9cef 100644
--- a/init/main.c
+++ b/init/main.c
@@ -92,8 +92,6 @@
 
 extern void init_IRQ(void);
 extern void fork_init(unsigned long);
-extern void mca_init(void);
-extern void sbus_init(void);
 extern void radix_tree_init(void);
 #ifndef CONFIG_DEBUG_RODATA
 static inline void mark_rodata_ro(void) { }