diff --git a/mbus/mbus-protocol.h b/mbus/mbus-protocol.h
index 45fc9da..290bf54 100755
--- a/mbus/mbus-protocol.h
+++ b/mbus/mbus-protocol.h
@@ -445,6 +445,11 @@ typedef struct _mbus_data_secondary_address {
 #define MBUS_DATA_RECORD_DIF_MASK_EXTENTION      0x80
 #define MBUS_DATA_RECORD_DIF_MASK_NON_DATA       0xF0
 
+#define MBUS_DATA_RECORD_DIFE_MASK_STORAGE_NO    0x0F
+#define MBUS_DATA_RECORD_DIFE_MASK_TARIFF        0x30
+#define MBUS_DATA_RECORD_DIFE_MASK_DEVICE        0x40
+#define MBUS_DATA_RECORD_DIFE_MASK_EXTENSION     0x80
+
 //
 // GENERAL APPLICATION ERRORS
 //