diff --git a/include/asm-powerpc/system.h b/include/asm-powerpc/system.h
index 4b41deaa8d8..43627596003 100644
--- a/include/asm-powerpc/system.h
+++ b/include/asm-powerpc/system.h
@@ -91,10 +91,6 @@ DEBUGGER_BOILERPLATE(debugger_iabr_match)
 DEBUGGER_BOILERPLATE(debugger_dabr_match)
 DEBUGGER_BOILERPLATE(debugger_fault_handler)
 
-#ifdef CONFIG_XMON
-extern void xmon_init(int enable);
-#endif
-
 #else
 static inline int debugger(struct pt_regs *regs) { return 0; }
 static inline int debugger_ipi(struct pt_regs *regs) { return 0; }
diff --git a/include/asm-powerpc/xmon.h b/include/asm-powerpc/xmon.h
index 43f7129984c..c02dd0ce13a 100644
--- a/include/asm-powerpc/xmon.h
+++ b/include/asm-powerpc/xmon.h
@@ -1,12 +1,18 @@
-#ifndef __PPC_XMON_H
-#define __PPC_XMON_H
+#ifndef __ASM_POWERPC_XMON_H
+#define __ASM_POWERPC_XMON_H
+
+/*
+ * Copyrignt (C) 2006 IBM Corp
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
 #ifdef __KERNEL__
 
-struct pt_regs;
-
-extern int xmon(struct pt_regs *excp);
-extern void xmon_printf(const char *fmt, ...);
 extern void xmon_init(int);
 
-#endif
-#endif
+#endif /* __KERNEL __ */
+#endif /* __ASM_POWERPC_XMON_H */