diff --git a/blockservice/blockservice.go b/blockservice/blockservice.go
index 2d1bc6cbb5ee..9864dcb2fad3 100644
--- a/blockservice/blockservice.go
+++ b/blockservice/blockservice.go
@@ -155,7 +155,7 @@ func (s *blockService) AddBlock(o blocks.Block) error {
 }
 
 func (s *blockService) AddBlocks(bs []blocks.Block) error {
-	//hash security
+	// hash security
 	for _, b := range bs {
 		err := verifcid.ValidateCid(b.Cid())
 		if err != nil {
@@ -202,7 +202,7 @@ func (s *blockService) GetBlock(ctx context.Context, c *cid.Cid) (blocks.Block,
 		f = s.exchange
 	}
 
-	return getBlock(ctx, c, s.blockstore, f) //hash security
+	return getBlock(ctx, c, s.blockstore, f) // hash security
 }
 
 func getBlock(ctx context.Context, c *cid.Cid, bs blockstore.Blockstore, f exchange.Fetcher) (blocks.Block, error) {
@@ -242,7 +242,7 @@ func getBlock(ctx context.Context, c *cid.Cid, bs blockstore.Blockstore, f excha
 // the returned channel.
 // NB: No guarantees are made about order.
 func (s *blockService) GetBlocks(ctx context.Context, ks []*cid.Cid) <-chan blocks.Block {
-	return getBlocks(ctx, ks, s.blockstore, s.exchange) //hash security
+	return getBlocks(ctx, ks, s.blockstore, s.exchange) // hash security
 }
 
 func getBlocks(ctx context.Context, ks []*cid.Cid, bs blockstore.Blockstore, f exchange.Fetcher) <-chan blocks.Block {
diff --git a/core/builder.go b/core/builder.go
index e7999bf9e9d8..764ccab42381 100644
--- a/core/builder.go
+++ b/core/builder.go
@@ -171,7 +171,7 @@ func setupNode(ctx context.Context, n *IpfsNode, cfg *BuildCfg) error {
 		TempErrFunc: isTooManyFDError,
 	}
 
-	//hash security
+	// hash security
 	bs := bstore.NewBlockstore(rds)
 	bs = &verifbs.VerifBS{bs}
 
diff --git a/core/commands/add.go b/core/commands/add.go
index f7f7a4215aa9..71c4515c2fec 100644
--- a/core/commands/add.go
+++ b/core/commands/add.go
@@ -258,7 +258,7 @@ You can now check what blocks have been created by:
 			exch = offline.Exchange(addblockstore)
 		}
 
-		bserv := blockservice.New(addblockstore, exch) //hash security 001
+		bserv := blockservice.New(addblockstore, exch) // hash security 001
 		dserv := dag.NewDAGService(bserv)
 
 		outChan := make(chan interface{}, adderOutChanSize)