diff --git a/app/lib/blockchain/DuniterBlockchain.ts b/app/lib/blockchain/DuniterBlockchain.ts
index 9ab3e5efa2629bdf339e551292f3327d4c1907bb..063a095053c85b91d8b9495532c5bdde7c93e24b 100644
--- a/app/lib/blockchain/DuniterBlockchain.ts
+++ b/app/lib/blockchain/DuniterBlockchain.ts
@@ -545,6 +545,7 @@ export class DuniterBlockchain {
     if (block) {
       await this.undoDeleteTransactions(block, dal);
     }
+    NewLogger().info("Reverted block #%s", blockstamp);
   }
 
   static async undoMembersUpdate(blockstamp: string, dal: FileDAL) {
diff --git a/app/lib/blockchain/Switcher.ts b/app/lib/blockchain/Switcher.ts
index f600aeedfa7bde0e465df80714c2d3cc6d942250..ebeb59acc1395b63c3c9a908182fe70ad5130163 100644
--- a/app/lib/blockchain/Switcher.ts
+++ b/app/lib/blockchain/Switcher.ts
@@ -277,6 +277,11 @@ export class Switcher<T extends SwitchBlock> {
               s[0].number + i,
               e && e.message
             );
+          if (e.type === "NotFoundError" && this.logger) {
+            this.logger.error(
+              "CRITICAL: LevelDB has inconsistent state: " + e.stack
+            );
+          }
           added = false;
         }
         i++;
diff --git a/app/lib/computation/BlockchainContext.ts b/app/lib/computation/BlockchainContext.ts
index a0589908f1a50ae43493ff21daafcd25d29a0ada..4ec0d79345ce71dc7269e123308fbe314e9e85cf 100644
--- a/app/lib/computation/BlockchainContext.ts
+++ b/app/lib/computation/BlockchainContext.ts
@@ -165,7 +165,7 @@ export class BlockchainContext {
 
   async revertCurrentBlock(): Promise<DBBlock> {
     const head_1 = await this.dal.bindexDAL.head(1);
-    this.logger.debug("Reverting block #%s...", head_1.number);
+    this.logger.debug("Reverting block #%s-%s...", head_1.number, head_1.hash);
     const block = await this.dal.getAbsoluteValidBlockInForkWindow(
       head_1.number,
       head_1.hash
diff --git a/app/modules/dump/blocks/dump.blocks.ts b/app/modules/dump/blocks/dump.blocks.ts
index f0967048486f6adacec248205fe03dc2a10d3b31..19229811d2ccabfaee877fc124534631dce229c5 100644
--- a/app/modules/dump/blocks/dump.blocks.ts
+++ b/app/modules/dump/blocks/dump.blocks.ts
@@ -28,5 +28,9 @@ export async function dumpBlocks(
 }
 
 export function dumpBlockIfDefined(b: DBBlock | undefined | null) {
+  console.log("-------- BLOCK --------");
+  console.log("Number: " + b?.number);
+  console.log("Hash: " + b?.hash);
+  console.log("");
   console.log(BlockDTO.fromJSONObject(b).getRawSigned());
 }