diff --git a/examples/SmallCosmoVolume/SmallCosmoVolume_cooling/small_cosmo_volume.yml b/examples/SmallCosmoVolume/SmallCosmoVolume_cooling/small_cosmo_volume.yml
index 9e0fb14c3382cb78cb5e6e03aa06b62013855d1e..96f10465410ac120b30904a8655da4d8133d09bd 100644
--- a/examples/SmallCosmoVolume/SmallCosmoVolume_cooling/small_cosmo_volume.yml
+++ b/examples/SmallCosmoVolume/SmallCosmoVolume_cooling/small_cosmo_volume.yml
@@ -88,7 +88,7 @@ EAGLEChemistry:
 GrackleCooling:
   CloudyTable: CloudyData_UVB=HM2012.h5 # Name of the Cloudy Table (available on the grackle bitbucket repository)
   WithUVbackground: 1                   # Enable or not the UV background
-  Redshift: 0                           # Redshift to use (-1 means time based redshift)
+  Redshift: -1                           # Redshift to use (-1 means time based redshift)
   WithMetalCooling: 1                   # Enable or not the metal cooling
   ProvideVolumetricHeatingRates: 0      # (optional) User provide volumetric heating rates
   ProvideSpecificHeatingRates: 0        # (optional) User provide specific heating rates