From 9f6c3d5a2c6aafd864384b69d84e59d6520f0e2a Mon Sep 17 00:00:00 2001
From: Mike J Innes <mike.j.innes@gmail.com>
Date: Wed, 10 Oct 2018 12:26:03 +0100
Subject: [PATCH] fixes #403

---
 src/tracker/array.jl | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/tracker/array.jl b/src/tracker/array.jl
index 00fe4cc4..5e6c67d4 100644
--- a/src/tracker/array.jl
+++ b/src/tracker/array.jl
@@ -376,8 +376,7 @@ unbroadcast(x::AbstractArray, Δ) =
     trim(x, sum(Δ, dims = ntuple(i -> size(x, i) == 1 ? i : ndims(Δ)+1, Val(ndims(Δ)))))
 
 unbroadcast(x::Number, Δ) = sum(Δ)
-unbroadcast(x::Base.RefValue{<:Function}, _) = nothing
-unbroadcast(x::Base.RefValue{<:Val}, _) = nothing
+unbroadcast(x::Base.RefValue, _) = nothing
 
 dual(x, p) = x
 dual(x::Real, p) = Dual(x, p)