diff --git a/node/src/main/scala/com/wavesplatform/mining/microblocks/MicroBlockMiner.scala b/node/src/main/scala/com/wavesplatform/mining/microblocks/MicroBlockMiner.scala
index d53d1cf88b..5f895c14d6 100644
--- a/node/src/main/scala/com/wavesplatform/mining/microblocks/MicroBlockMiner.scala
+++ b/node/src/main/scala/com/wavesplatform/mining/microblocks/MicroBlockMiner.scala
@@ -17,7 +17,7 @@ trait MicroBlockMiner {
       account: KeyPair,
       accumulatedBlock: Block,
       restTotalConstraint: MiningConstraint,
-      lastMicroBlock: Long
+      prevMicroBlockTs: Long
   ): Task[Unit]
 }
 
diff --git a/node/src/main/scala/com/wavesplatform/mining/microblocks/MicroBlockMinerImpl.scala b/node/src/main/scala/com/wavesplatform/mining/microblocks/MicroBlockMinerImpl.scala
index de83f87765..f6b0f764b5 100644
--- a/node/src/main/scala/com/wavesplatform/mining/microblocks/MicroBlockMinerImpl.scala
+++ b/node/src/main/scala/com/wavesplatform/mining/microblocks/MicroBlockMinerImpl.scala
@@ -45,15 +45,15 @@ class MicroBlockMinerImpl(
       account: KeyPair,
       accumulatedBlock: Block,
       restTotalConstraint: MiningConstraint,
-      lastMicroBlock: Long
+      prevMicroBlockTs: Long
   ): Task[Unit] =
-    generateOneMicroBlockTask(account, accumulatedBlock, restTotalConstraint, lastMicroBlock)
+    generateOneMicroBlockTask(account, accumulatedBlock, restTotalConstraint, prevMicroBlockTs)
       .flatMap {
         case res @ Success(newBlock, newConstraint) =>
           Task.defer(generateMicroBlockSequence(account, newBlock, newConstraint, res.nanoTime))
         case Retry =>
           Task
-            .defer(generateMicroBlockSequence(account, accumulatedBlock, restTotalConstraint, lastMicroBlock))
+            .defer(generateMicroBlockSequence(account, accumulatedBlock, restTotalConstraint, prevMicroBlockTs))
             .delayExecution(1 second)
         case Stop =>
           setDebugState(MinerDebugInfo.MiningBlocks)
@@ -65,7 +65,7 @@ class MicroBlockMinerImpl(
       account: KeyPair,
       accumulatedBlock: Block,
       restTotalConstraint: MiningConstraint,
-      lastMicroBlock: Long
+      prevMicroBlockTs: Long
   ): Task[MicroBlockMiningResult] = {
     val packTask = Task.cancelable[(Option[Seq[Transaction]], MiningConstraint, Option[ByteStr])] { cb =>
       @volatile var cancelled = false
@@ -93,8 +93,8 @@ class MicroBlockMinerImpl(
               )
             )
           )
-        log.trace(s"Finished pack for ${accumulatedBlock.id()}")
         val updatedTotalConstraint = updatedMdConstraint.head
+        log.trace(s"Finished pack for ${accumulatedBlock.id()}, updated total constraint: $updatedTotalConstraint")
         cb.onSuccess((unconfirmed, updatedTotalConstraint, stateHash))
       }
       Task.eval {
@@ -104,27 +104,25 @@ class MicroBlockMinerImpl(
 
     packTask.flatMap {
       case (Some(unconfirmed), updatedTotalConstraint, stateHash) if unconfirmed.nonEmpty =>
-        val delay = {
-          val delay         = System.nanoTime() - lastMicroBlock
-          val requiredDelay = settings.microBlockInterval.toNanos
-          if (delay >= requiredDelay) Duration.Zero else (requiredDelay - delay).nanos
-        }
-
         for {
-          _ <- Task.now(if (delay > Duration.Zero) log.trace(s"Sleeping ${delay.toMillis} ms before applying microBlock"))
-          _ <- Task.sleep(delay)
-          _ = log.trace(s"Generating microBlock for ${account.toAddress}, constraints: $updatedTotalConstraint")
           blocks <- forgeBlocks(account, accumulatedBlock, unconfirmed, stateHash)
             .leftWiden[Throwable]
             .liftTo[Task]
           (signedBlock, microBlock) = blocks
-          blockId <- appendMicroBlock(microBlock)
-          _ = BlockStats.mined(microBlock, blockId)
-          _ <- broadcastMicroBlock(account, microBlock, blockId)
-        } yield {
+          delay = {
+            val delay         = System.nanoTime() - prevMicroBlockTs
+            val requiredDelay = settings.microBlockInterval.toNanos
+            if (delay >= requiredDelay) Duration.Zero else (requiredDelay - delay).nanos
+          }
+          _ <-
+            if (delay > Duration.Zero) {
+              log.trace(s"Sleeping ${delay.toMillis} ms before applying microBlock")
+              Task.sleep(delay)
+            } else Task.unit
+          _ <- appendMicroBlock(microBlock, account)
+        } yield
           if (updatedTotalConstraint.isFull) Stop
           else Success(signedBlock, updatedTotalConstraint)
-        }
 
       case (_, updatedTotalConstraint, _) =>
         if (updatedTotalConstraint.isFull) {
@@ -142,23 +140,27 @@ class MicroBlockMinerImpl(
     }
   }
 
-  private def broadcastMicroBlock(account: KeyPair, microBlock: MicroBlock, blockId: BlockId): Task[Unit] =
-    Task(if (allChannels != null) allChannels.broadcast(MicroBlockInv(account, blockId, microBlock.reference)))
-
-  private def appendMicroBlock(microBlock: MicroBlock): Task[BlockId] =
-    MicroblockAppender(blockchainUpdater, utx, appenderScheduler)(microBlock, None)
-      .flatMap {
-        case Left(err) => Task.raiseError(MicroBlockAppendError(microBlock, err))
-        case Right(v)  => Task.now(v)
-      }
+  private def appendMicroBlock(microBlock: MicroBlock, account: KeyPair): Task[BlockId] =
+    MicroblockAppender(blockchainUpdater, utx, appenderScheduler)(microBlock, None).flatMap {
+      case Left(err) => Task.raiseError(MicroBlockAppendError(microBlock, err))
+      case Right(blockId) =>
+        Task.evalAsync {
+          BlockStats.mined(microBlock, blockId)
+          if (allChannels != null) {
+            allChannels.broadcast(MicroBlockInv(account, blockId, microBlock.reference))
+          }
+          blockId
+        }
+    }.uncancelable
 
   private def forgeBlocks(
       account: KeyPair,
       accumulatedBlock: Block,
-      unconfirmed: Seq[Transaction],
+      packedTxs: Seq[Transaction],
       stateHash: Option[ByteStr]
   ): Either[MicroBlockMiningError, (Block, MicroBlock)] =
     microBlockBuildTimeStats.measureSuccessful {
+      log.trace(s"Forging microBlock for ${account.toAddress}")
       for {
         signedBlock <- Block
           .buildAndSign(
@@ -167,7 +169,7 @@ class MicroBlockMinerImpl(
             reference = accumulatedBlock.header.reference,
             baseTarget = accumulatedBlock.header.baseTarget,
             generationSignature = accumulatedBlock.header.generationSignature,
-            txs = accumulatedBlock.transactionData ++ unconfirmed,
+            txs = accumulatedBlock.transactionData ++ packedTxs,
             signer = account,
             featureVotes = accumulatedBlock.header.featureVotes,
             rewardVote = accumulatedBlock.header.rewardVote,
@@ -176,7 +178,7 @@ class MicroBlockMinerImpl(
           )
           .leftMap(BlockBuildError)
         microBlock <- MicroBlock
-          .buildAndSign(signedBlock.header.version, account, unconfirmed, accumulatedBlock.id(), signedBlock.signature, stateHash)
+          .buildAndSign(signedBlock.header.version, account, packedTxs, accumulatedBlock.id(), signedBlock.signature, stateHash)
           .leftMap(MicroBlockBuildError)
       } yield (signedBlock, microBlock)
     }
diff --git a/node/src/main/scala/com/wavesplatform/network/messages.scala b/node/src/main/scala/com/wavesplatform/network/messages.scala
index 896b906246..f5b09c7413 100644
--- a/node/src/main/scala/com/wavesplatform/network/messages.scala
+++ b/node/src/main/scala/com/wavesplatform/network/messages.scala
@@ -80,9 +80,9 @@ case class MicroBlockInv(sender: PublicKey, totalBlockId: ByteStr, reference: By
 }
 
 object MicroBlockInv {
-  def apply(sender: KeyPair, totalBlockRef: ByteStr, prevBlockRef: ByteStr): MicroBlockInv = {
-    val signature = crypto.sign(sender.privateKey, sender.toAddress.bytes ++ totalBlockRef.arr ++ prevBlockRef.arr)
-    new MicroBlockInv(sender.publicKey, totalBlockRef, prevBlockRef, signature)
+  def apply(sender: KeyPair, totalBlockId: ByteStr, prevBlockRef: ByteStr): MicroBlockInv = {
+    val signature = crypto.sign(sender.privateKey, sender.toAddress.bytes ++ totalBlockId.arr ++ prevBlockRef.arr)
+    new MicroBlockInv(sender.publicKey, totalBlockId, prevBlockRef, signature)
   }
 }