diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/shared/calculator/StandardFunctions.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/shared/calculator/StandardFunctions.java
index 9b496251648ab3d9d59342983b36007e0f759bac..3f35039e5a26294a6359f0ec58a54bd85d4c0fbd 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/shared/calculator/StandardFunctions.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/shared/calculator/StandardFunctions.java
@@ -47,7 +47,7 @@ import ch.systemsx.cisd.openbis.generic.shared.calculator.customcolumn.CustomCol
  */
 public final class StandardFunctions
 {
-    static final Double DOUBLE_DEFAULT_VALUE = new Double(-Double.MAX_VALUE);
+    static final Double DOUBLE_DEFAULT_VALUE = Double.NaN;
 
     static final Integer INTEGER_DEFAULT_VALUE = new Integer(Integer.MIN_VALUE);