diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index bd360c2..b9c5346 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -5,7 +5,10 @@
 #define __always_inline	inline
 #endif
 #define __user
+
+#ifndef __attribute_const__
 #define __attribute_const__
+#endif
 
 #define __used		__attribute__((__unused__))
 #define __iomem