diff --git a/sources/user_problem.F90 b/sources/user_problem.F90
index 905d6a2..d28f870 100644
--- a/sources/user_problem.F90
+++ b/sources/user_problem.F90
@@ -35,8 +35,8 @@ module user_problem
   real(kind=8), save :: zeta = 0.00d+00
   real(kind=8), save :: dens = 1.00d+00
   real(kind=8), save :: bamp = 1.00d+00
-  real(kind=8), save :: bgui = 1.00d+00
-  real(kind=8), save :: dlta = 3.3333d-03
+  real(kind=8), save :: bgui = 0.00d+00
+  real(kind=8), save :: dlta = 3.16d-03
   real(kind=8), save :: pres = 5.00d-01
   real(kind=8), save :: pmag = 5.00d-01
   real(kind=8), save :: ptot = 1.00d+00