diff --git a/common/db.go b/common/db.go
index 6abfcb5..b1d67fd 100644
--- a/common/db.go
+++ b/common/db.go
@@ -32,7 +32,8 @@ const (
 	DATA_PUBLIC_KEY_REVERSE
 	DATA_ACTIVE_DECIMAL
 	DATA_ACTIVE_ADDRESS
-	DATA_VOUCHER_SYMBOLS
+	// Start the sub prefix data at 256 (0x0100)
+	DATA_VOUCHER_SYMBOLS DataTyp = 256 + iota
 	DATA_VOUCHER_BALANCES
 	DATA_VOUCHER_DECIMALS
 	DATA_VOUCHER_ADDRESSES