diff --git a/README.md b/README.md
index 4e2502901ae..133da0b89f7 100644
--- a/README.md
+++ b/README.md
@@ -67,7 +67,9 @@ and agree with license terms
 Install SBT(Scala Build Tool):
 
 `echo "deb http://dl.bintray.com/sbt/debian /" | sudo tee -a /etc/apt/sources.list.d/sbt.list`
+
 `apt-get update`
+
 `apt-get install sbt`
 
 
diff --git a/release-notes.md b/release-notes.md
index f1a139f7487..8e4ae939f1d 100644
--- a/release-notes.md
+++ b/release-notes.md
@@ -1,8 +1,9 @@
 **1.2.4**
 
 * New API call /transactions/info
-* MVStore is used for state persostance
-* Fixed JSON style in API callsq
+
+* MVStore is used for state persistence
+* Fixed JSON style in API calls
 * PeersHttpService was rebaned to PeersApiRoute
 
 **1.2.3**
diff --git a/scorex-transaction/src/main/scala/scorex/transaction/state/database/blockchain/StoredState.scala b/scorex-transaction/src/main/scala/scorex/transaction/state/database/blockchain/StoredState.scala
index ec5a7125977..57c7cb3b159 100644
--- a/scorex-transaction/src/main/scala/scorex/transaction/state/database/blockchain/StoredState.scala
+++ b/scorex-transaction/src/main/scala/scorex/transaction/state/database/blockchain/StoredState.scala
@@ -39,6 +39,9 @@ class StoredState(fileNameOpt: Option[String]) extends LagonakiState with Scorex
 
   private val lastStates: MVMap[Address, Int] = db.openMap(LastStates)
 
+  /**
+    * Transaction Signature -> Block height Map
+    */
   private val includedTx: MVMap[Array[Byte], Int] = db.openMap(IncludedTx)
 
   private val heightMap: MVMap[String, Int] = db.openMap(HeightKey)