diff --git a/src/spiFlashdb.hpp b/src/spiFlashdb.hpp
index 933483c..26397fd 100644
--- a/src/spiFlashdb.hpp
+++ b/src/spiFlashdb.hpp
@@ -13,7 +13,8 @@
 
 typedef enum {
 	STATR = 0, /* status register */
-	FUNCR = 1  /* function register */
+	FUNCR = 1, /* function register */
+	CONFR = 2  /* configuration register */
 } tb_loc_t;
 
 typedef struct {