diff --git a/arch/nios2/include/asm/io.h b/arch/nios2/include/asm/io.h
index 41e6bd4..817cd72 100644
--- a/arch/nios2/include/asm/io.h
+++ b/arch/nios2/include/asm/io.h
@@ -7,6 +7,8 @@
 #ifndef __ASM_NIOS2_IO_H_
 #define __ASM_NIOS2_IO_H_
 
+#include <asm/global_data.h>
+
 static inline void sync(void)
 {
 	__asm__ __volatile__ ("sync" : : : "memory");
@@ -170,5 +172,6 @@
 #define memcpy_toio(a, b, c)		memcpy((void *)(a), (b), (c))
 
 #include <asm-generic/io.h>
+#include <asm/global_data.h>
 
 #endif /* __ASM_NIOS2_IO_H_ */