diff --git a/test/Fields/inference_repro.jl b/test/Fields/inference_repro.jl
index 1010e5b540..c8f9278bd2 100644
--- a/test/Fields/inference_repro.jl
+++ b/test/Fields/inference_repro.jl
@@ -4,61 +4,29 @@ import ClimaComms
 ClimaComms.@import_required_backends
 import ClimaCore: Fields, Domains, Geometry, Meshes, Spaces
 
-Base.@kwdef struct LandParameters{FT}
+struct LandParameters{FT}
     ρ_cloud_ice::FT
-    ρ_cloud_liq::FT
-    LH_f0::FT
-    T_freeze::FT
-    grav::FT
 end
 Base.broadcastable(x::LandParameters) = tuple(x)
 
-ρ_cloud_ice(x) = x.ρ_cloud_ice
-ρ_cloud_liq(x) = x.ρ_cloud_liq
-LH_f0(x) = x.LH_f0
-T_freeze(x) = x.T_freeze
-grav(x) = x.grav
-
 struct vanGenuchten{FT}
-    "The inverse of the air entry potential (1/m)"
     α::FT
-    "The van Genuchten pore-size distribution index (unitless)"
-    n::FT
-    "The van Genuchten parameter m = 1 - 1/n (unitless)"
-    m::FT
-    "A derived parameter: the critical saturation at which capillary flow no longer replenishes the surface"
-    S_c::FT
-    function vanGenuchten{FT}(; α::FT, n::FT) where {FT}
-        m = 1 - 1 / n
-        S_c = (1 + ((n - 1) / n)^(1 - 2 * n))^(-m)
-        return new{FT}(α, n, m, S_c)
-    end
 end
 Base.broadcastable(x::vanGenuchten) = tuple(x)
 
-function matric_potential(cm::vanGenuchten{FT}, S::FT) where {FT}
-    (; α, m, n) = cm
-    ψ = -((S^(-FT(1) / m) - FT(1)) * α^(-n))^(FT(1) / n)
-    return ψ
-end
-
 function phase_change_source(
     θ_l::FT,
-    # θ_i::FT,
-    # T::FT,
-    # τ::FT,
-    # ν::FT,
-    # θ_r::FT,
     hydrology_cm::C,
     earth_param_set::EP,
 ) where {FT, EP, C}
-    _ρ_i = FT(ρ_cloud_ice(earth_param_set))
-    # ψw0 = matric_potential(hydrology_cm, _ρ_i)
-    return (θ_l - _ρ_i)
-    # return (θ_l - _ρ_i) / τ
+    return nothing
 end
 
-function make_space(::Type{FT}; zlim = (FT(-1), FT(0)), nelements = 200) where {FT}
+function make_space(
+    ::Type{FT};
+    zlim = (FT(-1), FT(0)),
+    nelements = 200,
+) where {FT}
     boundary_names = (:bottom, :top)
     column = Domains.IntervalDomain(
         Geometry.ZPoint{FT}(zlim[1]),
@@ -70,32 +38,27 @@ function make_space(::Type{FT}; zlim = (FT(-1), FT(0)), nelements = 200) where {
     return subsurface_space
 end
 
-function call_func(θ_l, θ_i, T, tau, ν, θ_r, hydrology_cm, earth_param_set)
+function call_func(θ_l, hydrology_cm, earth_param_set)
+    # function call_func(hydrology_cm, earth_param_set)
     # This fails with dynamic function invocation when `LandParameters`
-    # and `vanGenuchten` both use `tuple` for broadcasting, and it
-    # passes when `Ref` is used for either `LandParameters` or `vanGenuchten` broadcasting
-    # @. -phase_change_source(θ_l, θ_i, T, tau, ν, θ_r, hydrology_cm, earth_param_set)
-    # @. -phase_change_source(θ_l, tau, hydrology_cm, earth_param_set)
-    @. -phase_change_source(θ_l, hydrology_cm, earth_param_set)
+    # and `vanGenuchten` both use `tuple` for broadcasting,
+    # This passes when `Ref` is used for either `LandParameters` or `vanGenuchten` broadcasting
+    @. phase_change_source(θ_l, hydrology_cm, earth_param_set)
+
+    # These don't fail on GPU
+    # @. phase_change_source(hydrology_cm, earth_param_set)
+    # @. phase_change_source(θ_l, earth_param_set)
+    # @. phase_change_source(θ_l, hydrology_cm)
     return nothing
 end
 function main(::Type{FT}) where {FT}
-    Np = length(fieldtypes(LandParameters))
-    earth_param_set = LandParameters{FT}(zeros(Np)...)
-    ν = FT(0.495)
-    θ_r = FT(0.1)
-    hydrology_cm = vanGenuchten{FT}(; α = FT(2.6), n = FT(2.0))
+    earth_param_set = LandParameters{FT}(FT(0))
+    hydrology_cm = vanGenuchten{FT}(FT(2.6))
 
     space_3d = make_space(FT; zlim = (FT(-1), FT(0)), nelements = 200)
-
     θ_l = Fields.ones(space_3d)
-    θ_i = Fields.ones(space_3d)
-    T = Fields.ones(space_3d)
-    κ = Fields.ones(space_3d)
-    tau = Fields.ones(space_3d)
-
-    call_func(θ_l, θ_i, T, tau, ν, θ_r, hydrology_cm, earth_param_set)
 
+    call_func(θ_l, hydrology_cm, earth_param_set)
     return nothing
 end