diff --git a/app/lib/blockchain/DuniterBlockchain.ts b/app/lib/blockchain/DuniterBlockchain.ts
index a12d9cbaefec8614b314ff5d4486f1efc629d307..fd683b19e792829704a3bac3d1015d654d12e3a0 100644
--- a/app/lib/blockchain/DuniterBlockchain.ts
+++ b/app/lib/blockchain/DuniterBlockchain.ts
@@ -18,8 +18,8 @@ import {
   IndexEntry,
   Indexer,
   MindexEntry,
-  SimpleSindexEntryForWallet, SimpleTxEntryForWallet, SimpleUdEntryForWallet,
-  SindexEntry
+  SimpleTxEntryForWallet,
+  SimpleUdEntryForWallet
 } from "../indexer"
 import {ConfDTO} from "../dto/ConfDTO"
 import {BlockDTO} from "../dto/BlockDTO"
@@ -37,7 +37,6 @@ import {DataErrors} from "../common-libs/errors"
 import {NewLogger} from "../logger"
 import {DBTx} from "../db/DBTx"
 import {Underscore} from "../common-libs/underscore"
-import {DividendEntry, UDSource} from "../dal/indexDAL/abstract/DividendDAO"
 import {OtherConstants} from "../other_constants"
 
 export class DuniterBlockchain {
@@ -205,6 +204,13 @@ export class DuniterBlockchain {
       }
 
       logger.info('Block #' + block.number + ' added to the blockchain in %s ms', (Date.now() - start));
+
+      // Periodically, we trim the blockchain
+      if (block.number % CommonConstants.BLOCKS_COLLECT_THRESHOLD === 0) {
+        // Database trimming
+        await dal.loki.flushAndTrimData()
+      }
+
       return BlockDTO.fromJSONObject(added)
     }
     catch(err) {
diff --git a/app/lib/common-libs/constants.ts b/app/lib/common-libs/constants.ts
index ff000fb76ee3d2b477b01bcddf5af2c3c8dee1bd..3b16ff3e87429ced051393a61703a58f250746cb 100755
--- a/app/lib/common-libs/constants.ts
+++ b/app/lib/common-libs/constants.ts
@@ -307,6 +307,8 @@ export const CommonConstants = {
 
   MAX_AGE_OF_PEER_IN_BLOCKS: 200, // blocks
   INITIAL_DOWNLOAD_SLOTS: 1, // 1 peer
+
+  BLOCKS_COLLECT_THRESHOLD: 30, // Number of blocks to wait before trimming the loki data
 }
 
 function exact (regexpContent:string) {
diff --git a/app/lib/computation/BlockchainContext.ts b/app/lib/computation/BlockchainContext.ts
index b99cb96c827f08ef95c7fafc291ab691892f355a..9705c2eed46e09205fe7bda3268414a6c9858772 100644
--- a/app/lib/computation/BlockchainContext.ts
+++ b/app/lib/computation/BlockchainContext.ts
@@ -147,11 +147,6 @@ export class BlockchainContext {
     const block = forks[0];
     await this.checkAndAddBlock(BlockDTO.fromJSONObject(block))
     this.logger.debug('Applied block #%s', block.number);
-    // Periodically, we trim the blockchain
-    if (block.number % 30 === 0) {
-      // Database trimming
-      await this.dal.loki.flushAndTrimData()
-    }
   }
 
   async checkAndAddBlock(block:BlockDTO, trim = true) {
diff --git a/app/lib/constants.ts b/app/lib/constants.ts
index bc605076ac85c60270d61ab1a2fbe995e7814e37..7092d69e5ff3ccb15b66161198ad571936edd2ac 100644
--- a/app/lib/constants.ts
+++ b/app/lib/constants.ts
@@ -176,7 +176,6 @@ module.exports = {
   NO_FORK_ALLOWED: false,
 
   SAFE_FACTOR: 3,
-  BLOCKS_COLLECT_THRESHOLD: 30, // Blocks to collect from memory and persist
 
   MUTE_LOGS_DURING_UNIT_TESTS: OtherConstants.MUTE_LOGS_DURING_UNIT_TESTS,