diff --git a/src/solutions/dae_solutions.jl b/src/solutions/dae_solutions.jl
index 8cbbc839c2..0188fefb3a 100644
--- a/src/solutions/dae_solutions.jl
+++ b/src/solutions/dae_solutions.jl
@@ -27,13 +27,14 @@ https://docs.sciml.ai/DiffEqDocs/stable/basics/solution/
   exited due to an error. For more details, see
   [the return code documentation](https://docs.sciml.ai/SciMLBase/stable/interfaces/Solutions/#retcodes).
 """
-struct DAESolution{T, N, uType, duType, uType2, DType, tType, P, A, ID, S} <:
+struct DAESolution{T, N, uType, rateType, uType2, DType, tType, P, A, ID, S} <:
        AbstractDAESolution{T, N, uType}
     u::uType
-    du::duType
+    du::rateType
     u_analytic::uType2
     errors::DType
     t::tType
+    k::Union{Nothing, rateType}
     prob::P
     alg::A
     interp::ID
@@ -95,6 +96,7 @@ function build_solution(prob::AbstractDAEProblem, alg, t, u, du = nothing;
             u_analytic,
             errors,
             t,
+            k,
             prob,
             alg,
             interp,
@@ -112,7 +114,7 @@ function build_solution(prob::AbstractDAEProblem, alg, t, u, du = nothing;
         DAESolution{T, N, typeof(u), typeof(du), Nothing, Nothing, typeof(t),
             typeof(prob), typeof(alg), typeof(interp), typeof(stats)}(u, du,
             nothing,
-            nothing, t,
+            nothing, t, k,
             prob, alg,
             interp,
             dense, 0,
@@ -167,6 +169,7 @@ function build_solution(sol::AbstractDAESolution{T, N}, u_analytic, errors) wher
         u_analytic,
         errors,
         sol.t,
+        sol.k,
         sol.prob,
         sol.alg,
         sol.interp,
@@ -184,6 +187,7 @@ function solution_new_retcode(sol::AbstractDAESolution{T, N}, retcode) where {T,
         sol.u_analytic,
         sol.errors,
         sol.t,
+        sol.k,
         sol.prob,
         sol.alg,
         sol.interp,
@@ -201,6 +205,7 @@ function solution_new_tslocation(sol::AbstractDAESolution{T, N}, tslocation) whe
         sol.u_analytic,
         sol.errors,
         sol.t,
+        sol.k,
         sol.prob,
         sol.alg,
         sol.interp,
@@ -221,6 +226,7 @@ function solution_slice(sol::AbstractDAESolution{T, N}, I) where {T, N}
         sol.u_analytic[I],
         sol.errors,
         sol.t[I],
+        sol.k[I],
         sol.prob,
         sol.alg,
         sol.interp,