diff --git a/cmd/bootnode/main.go b/cmd/bootnode/main.go
index f6e2a14c3..6c9ff615a 100644
--- a/cmd/bootnode/main.go
+++ b/cmd/bootnode/main.go
@@ -44,7 +44,7 @@ func main() {
 		natdesc     = flag.String("nat", "none", "port mapping mechanism (any|none|upnp|pmp|extip:<IP>)")
 		netrestrict = flag.String("netrestrict", "", "restrict network communication to the given IP networks (CIDR masks)")
 		runv5       = flag.Bool("v5", false, "run a v5 topic discovery bootnode")
-		verbosity   = flag.Int("verbosity", int(log.LvlInfo), "log verbosity (0-9)")
+		verbosity   = flag.Int("verbosity", int(log.LvlInfo), "log verbosity (0-5)")
 		vmodule     = flag.String("vmodule", "", "log verbosity pattern")
 
 		nodeKey *ecdsa.PrivateKey
diff --git a/internal/debug/api.go b/internal/debug/api.go
index 86a4218f6..efd862677 100644
--- a/internal/debug/api.go
+++ b/internal/debug/api.go
@@ -196,7 +196,7 @@ func (*HandlerT) Stacks() string {
 	return buf.String()
 }
 
-// FreeOSMemory returns unused memory to the OS.
+// FreeOSMemory forces a garbage collection.
 func (*HandlerT) FreeOSMemory() {
 	debug.FreeOSMemory()
 }