diff --git a/drivers/i2c/ast_i2c.c b/drivers/i2c/ast_i2c.c
index 35dc234..c84d75a 100644
--- a/drivers/i2c/ast_i2c.c
+++ b/drivers/i2c/ast_i2c.c
@@ -13,6 +13,7 @@
 #include <i2c.h>
 #include <asm/io.h>
 #include <asm/arch/scu_ast2500.h>
+#include <linux/err.h>
 
 #include "ast_i2c.h"