diff --git a/arch/sparc/include/asm/processor.h b/arch/sparc/include/asm/processor.h
index 34baa35..622cfa5 100644
--- a/arch/sparc/include/asm/processor.h
+++ b/arch/sparc/include/asm/processor.h
@@ -7,6 +7,8 @@
 #endif
 
 #define nop() 		__asm__ __volatile__ ("nop")
+#ifndef __ASSEMBLY__
 extern void (*sparc_idle)(void);
+#endif
 
 #endif