diff --git a/namelists/event-generator/icon_atmosphere.namelist b/namelists/event-generator/icon_atmosphere.namelist
index dc9bc0a4e2b79e6a1d604ad243b4bf1b673ccedd..dabcf4182e55b840152fb771821f0dcd77a4a124 100644
--- a/namelists/event-generator/icon_atmosphere.namelist
+++ b/namelists/event-generator/icon_atmosphere.namelist
@@ -123,10 +123,10 @@
 &grid_nml
     dynamics_grid_filename = '../icon_grid_0024_R02B06_G.nc'
     radiation_grid_filename = '../icon_grid_0023_R02B05_R.nc'
-    dynamics_parent_grid_id=0
-    lredgrid_phys=.true.
-    lfeedback=.true.
-    ifeedback_type=2,
+    !dynamics_parent_grid_id=0
+    !lredgrid_phys=.true.
+    !lfeedback=.true.
+    !ifeedback_type=2,
 /
 
 &initicon_nml