diff --git a/include/linux/i2c/twl.h b/include/linux/i2c/twl.h
index 0c0d1ae..4ebd7c3 100644
--- a/include/linux/i2c/twl.h
+++ b/include/linux/i2c/twl.h
@@ -501,7 +501,7 @@
 #define RES_32KCLKOUT           26
 #define RES_RESET               27
 /* Power Reference */
-#define RES_Main_Ref            28
+#define RES_MAIN_REF            28
 
 #define TOTAL_RESOURCES		28
 /*