From c21a3a1f27a106f5df0e11305edd61d6de80def6 Mon Sep 17 00:00:00 2001
From: Guillaume Dalle <22795598+gdalle@users.noreply.github.com>
Date: Mon, 15 Jul 2024 20:02:27 +0200
Subject: [PATCH] Fix tag construction

---
 .../ext/DifferentiationInterfaceForwardDiffExt/utils.jl         | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/DifferentiationInterface/ext/DifferentiationInterfaceForwardDiffExt/utils.jl b/DifferentiationInterface/ext/DifferentiationInterfaceForwardDiffExt/utils.jl
index 8253077a1..d7ecbc576 100644
--- a/DifferentiationInterface/ext/DifferentiationInterfaceForwardDiffExt/utils.jl
+++ b/DifferentiationInterface/ext/DifferentiationInterfaceForwardDiffExt/utils.jl
@@ -2,7 +2,7 @@ choose_chunk(::AutoForwardDiff{nothing}, x) = Chunk(x)
 choose_chunk(::AutoForwardDiff{C}, x) where {C} = Chunk{min(length(x), C)}()
 
 tag_type(f, ::AutoForwardDiff{C,T}, x) where {C,T} = T
-tag_type(f, ::AutoForwardDiff{C,Nothing}, x) where {C} = Tag{typeof(f),eltype(x)}
+tag_type(f, ::AutoForwardDiff{C,Nothing}, x) where {C} = typeof(Tag(f, eltype(x)))
 
 make_dual_similar(::Type{T}, x::Number, dx::Number) where {T} = Dual{T}(x, dx)
 make_dual_similar(::Type{T}, x, dx) where {T} = similar(x, Dual{T,eltype(x),1})