diff --git a/meta/meta.go b/meta/meta.go
index f39d1fb..94c44ae 100644
--- a/meta/meta.go
+++ b/meta/meta.go
@@ -119,7 +119,7 @@ func (m Meta) writeShellEnv(shell string) error {
 		if runtime.GOOS == "windows" {
 			path = "Path"
 		}
-		tmpl = fmt.Sprintf("let-env %s[1] = ($env.%s[1] | append %%q)\n", path)
+		tmpl = fmt.Sprintf("let-env %[1]s = ($env.%[1]s | append %%q)\n", path)
 	case "sh":
 		tmpl = "PATH=$PATH:%s\n"
 	case "ps1":