diff --git a/arch/arm/mach-uniphier/sc64-regs.h b/arch/arm/mach-uniphier/sc64-regs.h
index 1f3b41a..fdcca23 100644
--- a/arch/arm/mach-uniphier/sc64-regs.h
+++ b/arch/arm/mach-uniphier/sc64-regs.h
@@ -11,7 +11,7 @@
 
 #ifndef __ASSEMBLY__
 #include <linux/compiler.h>
-#define sc_base			((void __iomem *)SC_BASE)
+extern void __iomem *sc_base;
 #endif
 
 #define SC_BASE			0x61840000