# \`@kwdef\` with \`const\` in mutable struct triggering "Missing Reference"
**URL:** https://discourse.julialang.org/t/kwdef-with-const-in-mutable-struct-triggering-missing-reference/112561
**Category:** General Usage
**Tags:** vscode
**Created:** [April 5, 2024, 9:18am UTC](https://discourse.julialang.org/t/kwdef-with-const-in-mutable-struct-triggering-missing-reference/112561 "2024-04-05T09:18:50Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@sstroemer](https://discourse.julialang.org/u/sstroemer)
#### Post date: [April 5, 2024, 9:18am UTC](https://discourse.julialang.org/t/kwdef-with-const-in-mutable-struct-triggering-missing-reference/112561/1 "2024-04-05T09:18:50Z")
Why does
```julia
@kwdef mutable struct MyStruct
const x::Float64 = 1.0
end
```
trigger a `Missing reference: x`?
(using the standard VSCode extension)
---
### Author:  [@pfitzseb](https://discourse.julialang.org/u/pfitzseb)
#### Post date: [April 5, 2024, 12:46pm UTC](https://discourse.julialang.org/t/kwdef-with-const-in-mutable-struct-triggering-missing-reference/112561/2 "2024-04-05T12:46:29Z")
That’s a bug in the linter.
---
### Author:  [@dylanxyz](https://discourse.julialang.org/u/dylanxyz)
#### Post date: [April 5, 2024, 1:00pm UTC](https://discourse.julialang.org/t/kwdef-with-const-in-mutable-struct-triggering-missing-reference/112561/3 "2024-04-05T13:00:28Z")
Honestly, i just disable the linter in the vs-code settings. For me, the autocompletion is more important than knowing if a variable is missing or a method is being called with wrong arguments.
I know nothing about how linters work, but it should be hard to build a good linter for a language, and especially hard for a language as dynamic as julia.
---
### Author:  [@pfitzseb](https://discourse.julialang.org/u/pfitzseb)
#### Post date: [April 5, 2024, 1:41pm UTC](https://discourse.julialang.org/t/kwdef-with-const-in-mutable-struct-triggering-missing-reference/112561/4 "2024-04-05T13:41:32Z")
Fixed by
>