diff --git a/Z4co/param.ccl b/Z4co/param.ccl
index 956f53c4..8de564d9 100644
--- a/Z4co/param.ccl
+++ b/Z4co/param.ccl
@@ -5,8 +5,17 @@ CCTK_INT deriv_order "Order of spatial finite differencing" STEERABLE=never
   2 :: "Second order finite difference"
   4 :: "Fourth order finite difference"
   6 :: "Sixth order finite difference"
+  8 :: "Eighth order finite difference"
 } 4
 
+CCTK_INT diss_order "Order of Kreiss-Oliger dissipation" STEERABLE=never
+{
+  3 :: "Third order KO dissipation"
+  5 :: "Fifth order KO dissipation"
+  7 :: "Seventh order KO dissipation"
+  9 :: "Ninth order KO dissipation"
+} 5
+
 BOOLEAN calc_ADM_vars "Calculate ADM variables" STEERABLE=recover
 {
 } yes
diff --git a/Z4co/src/rhs.cxx b/Z4co/src/rhs.cxx
index 80852dc2..16fa0d65 100644
--- a/Z4co/src/rhs.cxx
+++ b/Z4co/src/rhs.cxx
@@ -256,16 +256,23 @@ extern "C" void Z4co_RHS(CCTK_ARGUMENTS) {
 
   vreal (*calc_diss)(const GF3D2<const CCTK_REAL> &, const vbool &,
                      const vect<int, dim> &, const vect<CCTK_REAL, dim> &);
-  switch (deriv_order) {
-  case 2: {
+  switch (diss_order) {
+  case 3: {
     calc_diss = &Derivs::calc_diss<2>;
     break;
   }
-  case 4:
-  case 6: {
+  case 5: {
     calc_diss = &Derivs::calc_diss<4>;
     break;
   }
+  case 7: {
+    calc_diss = &Derivs::calc_diss<6>;
+    break;
+  }
+  case 9: {
+    calc_diss = &Derivs::calc_diss<8>;
+    break;
+  }
   default:
     assert(0);
   }