# Invalid redefinition of constant
**URL:** https://discourse.julialang.org/t/invalid-redefinition-of-constant/54686
**Category:** General Usage
**Created:** [February 5, 2021, 1:49pm UTC](https://discourse.julialang.org/t/invalid-redefinition-of-constant/54686 "2021-02-05T13:49:39Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@marouane](https://discourse.julialang.org/u/marouane)
#### Post date: [February 5, 2021, 1:49pm UTC](https://discourse.julialang.org/t/invalid-redefinition-of-constant/54686/1 "2021-02-05T13:49:39Z")
i have a function where i define inside the following:
```julia
function relay(x,y,z)
block of code
funcQ(v)=qrs.prob(a,v,b)
return funcQ
```
then when i want to call the inner function, this happens
`funcQ= relay(argument list)`
i get this message:
`invalid redefinition of constant funcQ`
---
### Author:  [@rdeits](https://discourse.julialang.org/u/rdeits)
#### Post date: [February 5, 2021, 2:23pm UTC](https://discourse.julialang.org/t/invalid-redefinition-of-constant/54686/2 "2021-02-05T14:23:02Z")
I can’t reproduce the error from the code you’ve given. Here’s a simplified version which works just fine:
```julia
julia> function relay(x, y, z)
funcQ(v) = x + y + z + v
return funcQ
end
relay (generic function with 1 method)
julia> funcQ = relay(1, 2, 3)
funcQ (generic function with 1 method)
```
What probably happened is that you defined `function funcQ(...)` earlier in the same Julia session. Does the error persist if you restart Julia?
---
### Author:  [@marouane](https://discourse.julialang.org/u/marouane)
#### Post date: [February 5, 2021, 8:53pm UTC](https://discourse.julialang.org/t/invalid-redefinition-of-constant/54686/3 "2021-02-05T20:53:55Z")
Yeah actually it worked after I restarted the kernel