diff --git a/websockets/chat-tcp/src/main.rs b/websockets/chat-tcp/src/main.rs
index 27cfccf..c6d3235 100644
--- a/websockets/chat-tcp/src/main.rs
+++ b/websockets/chat-tcp/src/main.rs
@@ -195,7 +195,7 @@ impl StreamHandler<Result<ws::Message, ws::ProtocolError>> for WsChatSession {
 }
 
 impl WsChatSession {
-    /// helper method that sends ping to client every second.
+    /// helper method that sends ping to client every 5 seconds (HEARTBEAT_INTERVAL).
     ///
     /// also this method checks heartbeats from client
     fn hb(&self, ctx: &mut ws::WebsocketContext<Self>) {
diff --git a/websockets/chat/src/session.rs b/websockets/chat/src/session.rs
index ce3f418..72f6a3c 100644
--- a/websockets/chat/src/session.rs
+++ b/websockets/chat/src/session.rs
@@ -31,7 +31,7 @@ pub struct WsChatSession {
 }
 
 impl WsChatSession {
-    /// helper method that sends ping to client every second.
+    /// helper method that sends ping to client every 5 seconds (HEARTBEAT_INTERVAL).
     ///
     /// also this method checks heartbeats from client
     fn hb(&self, ctx: &mut ws::WebsocketContext<Self>) {
diff --git a/websockets/echo/src/server.rs b/websockets/echo/src/server.rs
index 9ae6df6..e262eb7 100644
--- a/websockets/echo/src/server.rs
+++ b/websockets/echo/src/server.rs
@@ -22,7 +22,7 @@ impl MyWebSocket {
         Self { hb: Instant::now() }
     }
 
-    /// helper method that sends ping to client every second.
+    /// helper method that sends ping to client every 5 seconds (HEARTBEAT_INTERVAL).
     ///
     /// also this method checks heartbeats from client
     fn hb(&self, ctx: &mut <Self as Actor>::Context) {