diff --git a/PRIVATE b/PRIVATE
index dc568df60..96a564660 160000
--- a/PRIVATE
+++ b/PRIVATE
@@ -1 +1 @@
-Subproject commit dc568df60e36b659d9a1f84ac93fd4abb1b8fe3c
+Subproject commit 96a564660b1f109009039785ca6cc4c670867178
diff --git a/src/grid/grid_mech_spectral_basic.f90 b/src/grid/grid_mech_spectral_basic.f90
index 8072f49b9..e7e544886 100644
--- a/src/grid/grid_mech_spectral_basic.f90
+++ b/src/grid/grid_mech_spectral_basic.f90
@@ -123,13 +123,13 @@ subroutine grid_mech_spectral_basic_init
 ! read numerical parameters and do sanity checks
   num_grid => config_numerics%get('grid',defaultVal=emptyDict)
 
-  num%update_gamma    = num_grid%get_asBool   ('update_gamma',   defaultVal=.false.)
-  num%eps_div_atol    = num_grid%get_asFloat  ('eps_div_atol',   defaultVal=1.0e-4_pReal)
-  num%eps_div_rtol    = num_grid%get_asFloat  ('eps_div_rtol',   defaultVal=5.0e-4_pReal)
-  num%eps_stress_atol = num_grid%get_asFloat  ('eps_stress_atol',defaultVal=1.0e3_pReal)
-  num%eps_stress_rtol = num_grid%get_asFloat('eps_stress_rtol',defaultVal=1.0e-3_pReal)
-  num%itmin           = num_grid%get_asInt    ('itmin',defaultVal=1)
-  num%itmax           = num_grid%get_asInt    ('itmax',defaultVal=250)
+  num%update_gamma    = num_grid%get_asBool  ('update_gamma',   defaultVal=.false.)
+  num%eps_div_atol    = num_grid%get_asFloat ('eps_div_atol',   defaultVal=1.0e-4_pReal)
+  num%eps_div_rtol    = num_grid%get_asFloat ('eps_div_rtol',   defaultVal=5.0e-4_pReal)
+  num%eps_stress_atol = num_grid%get_asFloat ('eps_stress_atol',defaultVal=1.0e3_pReal)
+  num%eps_stress_rtol = num_grid%get_asFloat ('eps_stress_rtol',defaultVal=1.0e-3_pReal)
+  num%itmin           = num_grid%get_asInt   ('itmin',defaultVal=1)
+  num%itmax           = num_grid%get_asInt   ('itmax',defaultVal=250)
 
   if (num%eps_div_atol <= 0.0_pReal)             call IO_error(301,ext_msg='eps_div_atol')
   if (num%eps_div_rtol < 0.0_pReal)              call IO_error(301,ext_msg='eps_div_rtol')