diff --git a/app/vmctl/README.md b/app/vmctl/README.md
index 49275898a..fc08cdb77 100644
--- a/app/vmctl/README.md
+++ b/app/vmctl/README.md
@@ -483,6 +483,10 @@ Processing ranges: 8798 / 8798 [████████████████
 2022/10/19 16:45:37 Total time: 1m19.406283424s
 ```
 
+Migrating big volumes of data may result in remote read client reaching the timeout.
+Consider increasing the value of `--remote-read-http-timeout` (default `5m`) command-line flag when seeing
+timeouts or `context canceled` errors.
+
 ### Filtering
 
 The filtering consists of two parts: by labels and time.
diff --git a/app/vmctl/flags.go b/app/vmctl/flags.go
index 1f044a7ea..d20808b9b 100644
--- a/app/vmctl/flags.go
+++ b/app/vmctl/flags.go
@@ -485,7 +485,7 @@ var (
 		},
 		&cli.DurationFlag{
 			Name:  remoteReadHTTPTimeout,
-			Usage: "Timeout defines timeout for HTTP write request to remote storage",
+			Usage: "Timeout defines timeout for HTTP requests made by remote read client",
 		},
 		&cli.StringFlag{
 			Name:  remoteReadHeaders,
diff --git a/app/vmctl/remoteread/remoteread.go b/app/vmctl/remoteread/remoteread.go
index 49a6f9d8c..c27ed799a 100644
--- a/app/vmctl/remoteread/remoteread.go
+++ b/app/vmctl/remoteread/remoteread.go
@@ -21,7 +21,7 @@ import (
 )
 
 const (
-	defaultReadTimeout = 30 * time.Second
+	defaultReadTimeout = 5 * time.Minute
 	remoteReadPath     = "/api/v1/read"
 	healthPath         = "/-/healthy"
 )
diff --git a/docs/vmctl.md b/docs/vmctl.md
index a268d0294..df6dc5de0 100644
--- a/docs/vmctl.md
+++ b/docs/vmctl.md
@@ -487,6 +487,10 @@ Processing ranges: 8798 / 8798 [████████████████
 2022/10/19 16:45:37 Total time: 1m19.406283424s
 ```
 
+Migrating big volumes of data may result in remote read client reaching the timeout.
+Consider increasing the value of `--remote-read-http-timeout` (default `5m`) command-line flag when seeing
+timeouts or `context canceled` errors.
+
 ### Filtering
 
 The filtering consists of two parts: by labels and time.