diff --git a/src/write_global_output.f90 b/src/write_global_output.f90
index 5257eea2ef147e299d7e3a07f95d88130f8954d8..8b7267647324cece522d012eb3c96101fdcb1006 100644
--- a/src/write_global_output.f90
+++ b/src/write_global_output.f90
@@ -119,6 +119,8 @@ if (iproc.eq.0) then
                  osolve%spressure(i),  &
                  osolve%crit(i),            &
                  osolve%e2d(i),             &
+                 osolve%effective_viscosity(i),      & 
+                 osolve%is_plastic(i),               & 
                  ov%whole_leaf_in_fluid(i), &
                   i=1,osolve%nleaves)
    ! write octree information