diff --git a/src/main/java/no/bioforsk/vips/model/naerstadmodel/NaerstadModel.java b/src/main/java/no/bioforsk/vips/model/naerstadmodel/NaerstadModel.java
index 0119311ec23e1fa3915c7d8151250879794c6127..663e95c33ecfd30f3b74021e3f98bb8df0803e5a 100644
--- a/src/main/java/no/bioforsk/vips/model/naerstadmodel/NaerstadModel.java
+++ b/src/main/java/no/bioforsk/vips/model/naerstadmodel/NaerstadModel.java
@@ -279,7 +279,7 @@ public class NaerstadModel extends I18nImpl implements Model{
                     this.BT.add(o); break;
                 case WeatherElements.GLOBAL_RADIATION:
                     this.Q0.add(o); break;
-                case WeatherElements.RELATIVE_HUMIDITY:
+                case WeatherElements.RELATIVE_HUMIDITY_MEAN:
                     this.UM.add(o); break;
                 default:
                     // TODO: Throw validation error?