diff --git a/cmd/lucy/help.go b/cmd/lucy/help.go
index 81f910f..9206771 100644
--- a/cmd/lucy/help.go
+++ b/cmd/lucy/help.go
@@ -1,6 +1,6 @@
 package main
 
-var helpString = `
+const helpString = `
 lucy – lucifer CLI
 
 EXAMPLES
@@ -15,4 +15,4 @@ DEVICE COMMANDS
 
 EVENT COMMANDS
   run <event name> <*=S>
-`[1:]
+`