diff --git a/src/dense.jl b/src/dense.jl
index c69d476..3d73448 100644
--- a/src/dense.jl
+++ b/src/dense.jl
@@ -185,7 +185,6 @@ function Base.show(io::IO, backend::AutoForwardDiff{chunksize}) where {chunksize
     print(io, ")")
 end
 
-
 """
     AutoGTPSA{D}
 
@@ -201,11 +200,10 @@ Defined by [ADTypes.jl](https://github.com/SciML/ADTypes.jl).
 
   - `descriptor::D`: can be either
 
-      + a GTPSA `Descriptor` specifying the number of variables/parameters, parameter 
-        order, individual variable/parameter truncation orders, and maximum order. See 
+      + a GTPSA `Descriptor` specifying the number of variables/parameters, parameter
+        order, individual variable/parameter truncation orders, and maximum order. See
         the [GTPSA.jl documentation](https://bmad-sim.github.io/GTPSA.jl/stable/man/c_descriptor/) for more details.
       + `nothing` to automatically use a `Descriptor` given the context.
-      
 """
 Base.@kwdef struct AutoGTPSA{D} <: AbstractADType
     descriptor::D = nothing
@@ -215,12 +213,10 @@ mode(::AutoGTPSA) = ForwardMode()
 
 function Base.show(io::IO, backend::AutoGTPSA{D}) where {D}
     print(io, AutoGTPSA, "(")
-    D != Nothing && print(io, "descriptor=\n", repr(backend.descriptor; context = io))
+    D != Nothing && print(io, "descriptor=", repr(backend.descriptor; context = io))
     print(io, ")")
 end
 
-
-
 """
     AutoPolyesterForwardDiff{chunksize,T}
 
diff --git a/test/misc.jl b/test/misc.jl
index b3e501f..e22c380 100644
--- a/test/misc.jl
+++ b/test/misc.jl
@@ -33,6 +33,8 @@ for backend in [
     ADTypes.AutoFiniteDifferences(; fdm = :fdm),
     ADTypes.AutoForwardDiff(),
     ADTypes.AutoForwardDiff(chunksize = 3, tag = :tag),
+    ADTypes.AutoGTPSA(),
+    ADTypes.AutoGTPSA(; descriptor = Val(:descriptor)),
     ADTypes.AutoPolyesterForwardDiff(),
     ADTypes.AutoPolyesterForwardDiff(chunksize = 3, tag = :tag),
     ADTypes.AutoReverseDiff(),
diff --git a/test/runtests.jl b/test/runtests.jl
index 6b82466..9f6db28 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -66,7 +66,7 @@ function every_ad_with_options()
         AutoForwardDiff(),
         AutoForwardDiff(chunksize = 3, tag = :tag),
         AutoGTPSA(),
-        AutoGTPSA(descriptor=:descriptor),
+        AutoGTPSA(descriptor = Val(:descriptor)),
         AutoPolyesterForwardDiff(),
         AutoPolyesterForwardDiff(chunksize = 3, tag = :tag),
         AutoReverseDiff(),