diff --git a/CHANGELOG.md b/CHANGELOG.md
index e123eaa..5576d64 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,10 @@ Changed:
 
  - Options are now disabled while running
 
+Fixed:
+
+ - Tell users the default telescope ID is 0
+
 ## v2.2.3 - 2021-12-06
 
 Fixed:
diff --git a/cmd/main.go b/cmd/main.go
index f7b4ea6..ab09227 100644
--- a/cmd/main.go
+++ b/cmd/main.go
@@ -72,7 +72,7 @@ func main() {
 	flag.BoolVar(&debug, "debug", false, "Enable debug logging")
 	flag.BoolVar(&version, "version", false, "Print version and exit")
 	flag.StringVar(&_mode, "mode", "nexstar", "Comms mode: [nexstar|lx200]")
-	flag.Uint32Var(&telescopeId, "telescope-id", 0, "Alpaca Telescope ID")
+	flag.Uint32Var(&telescopeId, "telescope-id", 0, "Alpaca Telescope ID (default 0)")
 	flag.StringVar(&_mount_type, "mount-type", "altaz", "Mount type: [altaz|eqn|eqs]")
 	flag.BoolVar(&noAutoTrack, "no-auto-track", false, "Do not enable auto-track")
 	flag.BoolVar(&highPrecision, "high-precision", false, "Default to High Precision LX200 mode")