diff --git a/main.go b/main.go
index 4fb67a17..372ad54d 100644
--- a/main.go
+++ b/main.go
@@ -90,7 +90,7 @@ func main() {
 
 	flagset := flag.NewFlagSet(os.Args[0], flag.ExitOnError)
 	flagset.StringVar(&insecureListenAddress, "insecure-listen-address", "", "The address the prom-label-proxy HTTP server should listen on.")
-	flagset.StringVar(&internalListenAddress, "internal-listen-address", "", "The address the internal prom-label-proxy HTTP server should listen on to expose metrics about itself.")
+	flagset.StringVar(&internalListenAddress, "internal-listen-address", "", "The address the internal prom-label-proxy HTTP server should listen on to expose metrics about itself as well as the pprof endpoints. By default, prom-label-proxy doesn't start the internal HTTP server.")
 	flagset.StringVar(&queryParam, "query-param", "", "Name of the HTTP parameter that contains the tenant value. At most one of -query-param, -header-name and -label-value should be given. If the flag isn't defined and neither -header-name nor -label-value is set, it will default to the value of the -label flag.")
 	flagset.StringVar(&headerName, "header-name", "", "Name of the HTTP header name that contains the tenant value. At most one of -query-param, -header-name and -label-value should be given.")
 	flagset.StringVar(&upstream, "upstream", "", "The upstream URL to proxy to.")