diff --git a/src/main/java/no/bioforsk/vips/model/applescabmodel/AscosporeMaturityTable.java b/src/main/java/no/bioforsk/vips/model/applescabmodel/AscosporeMaturityTable.java
index 60b1afce8c60a4b5a22b4410212fca969f512242..8e05131da0438001daa03aeaf63c93514a26b1f0 100644
--- a/src/main/java/no/bioforsk/vips/model/applescabmodel/AscosporeMaturityTable.java
+++ b/src/main/java/no/bioforsk/vips/model/applescabmodel/AscosporeMaturityTable.java
@@ -38,7 +38,7 @@ public class AscosporeMaturityTable {
     public Double getAscosporeMaturity(Double accumulatedTemperature)
     {
         Double ascosporeMaturity;
-        if ( accumulatedTemperature >= 0 )
+        if ( accumulatedTemperature > 0 )
         {
             if ( accumulatedTemperature < 600 )
             {