diff --git a/cmd/snap/cmd_debug_api.go b/cmd/snap/cmd_debug_api.go
index b2fb7016634..01dcd093e4b 100644
--- a/cmd/snap/cmd_debug_api.go
+++ b/cmd/snap/cmd_debug_api.go
@@ -32,7 +32,7 @@ import (
 	"github.com/snapcore/snapd/logger"
 )
 
-var longDebugAPIHelp = `
+const longDebugAPIHelp = `
 Execute a raw query to snapd API. Complex input can be read from stdin, while
 output is printed to stdout. See examples below: