diff --git a/sonoff/language/en-GB.h b/sonoff/language/en-GB.h
index 3a44d8e53..996b859e1 100644
--- a/sonoff/language/en-GB.h
+++ b/sonoff/language/en-GB.h
@@ -366,6 +366,7 @@
 #define D_KNX_SET "Set"
 #define D_KNX_ADD "Add"
 #define D_DELETE "Delete"
+#define D_REPLY "Reply"
 #define D_KNX_PHYSICAL_ADDRESS_NOTE "(Must be unique on the KNX network)"
 #define D_KNX_GROUP_ADDRESS_TO_WRITE "Group Addresses to Send Data to"
 #define D_KNX_GROUP_ADDRESS_TO_READ "Group Addresses to Receive Data from"