diff --git a/src/main/java/net/schmizz/sshj/SSHClient.java b/src/main/java/net/schmizz/sshj/SSHClient.java
index 63ff8793..a1b7931a 100644
--- a/src/main/java/net/schmizz/sshj/SSHClient.java
+++ b/src/main/java/net/schmizz/sshj/SSHClient.java
@@ -636,7 +636,7 @@ public class SSHClient
             rekey();
     }
 
-    /** On connection establishment, also initialize the SSH transport via {@link Transport#init} and {@link #doKex()}. */
+    /** On connection establishment, also initializes the SSH transport via {@link Transport#init} and {@link #doKex()}. */
     @Override
     protected void onConnect()
             throws IOException {
diff --git a/src/main/java/net/schmizz/sshj/transport/Transport.java b/src/main/java/net/schmizz/sshj/transport/Transport.java
index 3a479ccd..3d39bfe3 100644
--- a/src/main/java/net/schmizz/sshj/transport/Transport.java
+++ b/src/main/java/net/schmizz/sshj/transport/Transport.java
@@ -94,8 +94,10 @@ public interface Transport
      */
     void setTimeout(int timeout);
 
+    /** @return the interval in seconds at which a heartbeat message is sent to the server */
     int getHeartbeatInterval();
 
+    /** @param interval the interval in seconds, {@code 0} means no hearbeat */
     void setHeartbeatInterval(int interval);
 
     /** @return the hostname to which this transport is connected. */