diff --git a/tests/analytic_derivatives/fs2000_analytic_derivation.mod b/tests/analytic_derivatives/fs2000_analytic_derivation.mod
index 7448b8540d01d15be4d659e6a0d828f5c803bddb..a5e6eeec1e51b4835415ca654bff2aef29c7bd01 100644
--- a/tests/analytic_derivatives/fs2000_analytic_derivation.mod
+++ b/tests/analytic_derivatives/fs2000_analytic_derivation.mod
@@ -68,8 +68,8 @@ estimated_params;
 alp, 0.356;
 rho, 0.129;
 psi, 0.65;
-stderr e_a, 0.035449;
-stderr e_m, 0.008862;
+stderr e_a, 0.035449, 0, inf;
+stderr e_m, 0.008862, 0, inf;
 end;
 
 varobs gp_obs gy_obs;