diff --git a/src/KalmanFilterTools.jl b/src/KalmanFilterTools.jl
index f48f15103b8ae01b16cf9e2c4b491fcfa8462dda..f6a0b752007d60bee41612e1b142021105ff1c83 100644
--- a/src/KalmanFilterTools.jl
+++ b/src/KalmanFilterTools.jl
@@ -1046,7 +1046,7 @@ struct KalmanSmootherWs{T, U} <: KalmanWs{T, U}
         kalman_tol = 1e-12
 
         new(csmall, Zsmall, iZsmall, RQ, QQ, v, F, cholF, cholH, iF,
-            a1, iFv, r, r1, at_t, K, KDK, L, L1, N, N1, ZP, Pt_t, Kv,
+            iFv, a1, r, r1, at_t, K, KDK, L, L1, N, N1, ZP, Pt_t, Kv,
             iFZ, PTmp, oldP, lik, KT, D, ystar, Zstar, Hstar, PZi,
             tmp_np, tmp_ns, tmp_ny, tmp_ns_np, tmp_ny_ny, kalman_tol)
     end