diff --git a/app/lib/constants.js b/app/lib/constants.js
index b2f8138be925245f9940722bde3bd24d08905f5b..09f5e39b11d6972e5bf9c733f82b0bbaa8647bd9 100644
--- a/app/lib/constants.js
+++ b/app/lib/constants.js
@@ -146,7 +146,7 @@ module.exports = {
   TRANSACTION_VERSION: 10,
 
   REVOCATION_FACTOR: 2, // This is protocol fixed value
-  NB_DIGITS_UD: 6,      // This is protocol fixed value
+  NB_DIGITS_UD: 4,      // This is protocol fixed value
   FIRST_UNIT_BASE: 0,
 
   TRANSACTION_EXPIRY_DELAY: 3600 * 24 * 7,
diff --git a/app/lib/dup/indexer.js b/app/lib/dup/indexer.js
index 7955f821b0bdf13242cae317dd67e6a713f2d5c8..84bbc11a0555c79ca6eb1d68f81d30cbc4c344f1 100644
--- a/app/lib/dup/indexer.js
+++ b/app/lib/dup/indexer.js
@@ -837,7 +837,7 @@ const indexer = module.exports = {
 
   // BR_G14
   prepareUnitBase: (HEAD) => {
-    if (HEAD.dividend >= Math.pow(10, 6)) {
+    if (HEAD.dividend >= Math.pow(10, constants.NB_DIGITS_UD)) {
       HEAD.dividend = Math.ceil(HEAD.dividend / 10);
       HEAD.new_dividend = HEAD.dividend;
       HEAD.unitBase = HEAD.unitBase + 1;