diff --git a/api/message/types.go b/api/message/types.go
index a12ccb1..399cca6 100644
--- a/api/message/types.go
+++ b/api/message/types.go
@@ -1,6 +1,6 @@
 package message
 
-type HearthBeat struct {
+type HeartBeat struct {
 	BlockNum                 uint32 `json:"blocknum"`
 	HeadBlockNum             uint32 `json:"head_blocknum"`
 	LastIrreversibleBlockNum uint32 `json:"last_irreversible_blocknum"`
diff --git a/app/ship_processor.go b/app/ship_processor.go
index 2229594..061f3f5 100644
--- a/app/ship_processor.go
+++ b/app/ship_processor.go
@@ -71,7 +71,7 @@ func (processor *ShipProcessor) processBlock(block *ship.GetBlocksResultV0) {
 	}
 
 	if block.ThisBlock.BlockNum%10 == 0 {
-		hb := message.HearthBeat{
+		hb := message.HeartBeat{
 			BlockNum:                 block.ThisBlock.BlockNum,
 			LastIrreversibleBlockNum: block.LastIrreversible.BlockNum,
 			HeadBlockNum:             block.Head.BlockNum,
diff --git a/docs/messages.md b/docs/messages.md
index e467fa2..13dedcd 100644
--- a/docs/messages.md
+++ b/docs/messages.md
@@ -8,9 +8,9 @@ All messages are encoded in `json` format
 
 ## Types
 
-### HearthBeat
+### HeartBeat
 
-Heartbeat messages are posted to the hearthbeat channel periodically.
+Heartbeat messages are posted to the heartbeat channel periodically.
 
 | Field                      | Datatype | Description                                 |
 | -------------------------- | -------- | ------------------------------------------- |