diff --git a/lib/OrdinaryDiffEqDifferentiation/src/alg_utils.jl b/lib/OrdinaryDiffEqDifferentiation/src/alg_utils.jl
index cb739174be..8d767433fd 100644
--- a/lib/OrdinaryDiffEqDifferentiation/src/alg_utils.jl
+++ b/lib/OrdinaryDiffEqDifferentiation/src/alg_utils.jl
@@ -6,7 +6,7 @@ _alg_autodiff(alg::OrdinaryDiffEqAdaptiveImplicitAlgorithm{CS, AD}) where {CS, A
 _alg_autodiff(alg::DAEAlgorithm{CS, AD}) where {CS, AD} = alg.autodiff
 _alg_autodiff(alg::OrdinaryDiffEqImplicitAlgorithm{CS, AD}) where {CS, AD} = alg.autodiff
 _alg_autodiff(alg::CompositeAlgorithm) = _alg_autodiff(alg.algs[end])
-function _alg_autodiff(::Union{OrdinaryDiffEqExponentialAlgorithm{CS, AD},
+function _alg_autodiff(alg::Union{OrdinaryDiffEqExponentialAlgorithm{CS, AD},
         OrdinaryDiffEqAdaptiveExponentialAlgorithm{CS, AD}
 }) where {
         CS, AD