diff --git a/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/client/web/server/calculator/RowCalculatorTest.java b/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/client/web/server/calculator/RowCalculatorTest.java
index 44664882ad56df52577ff5c520edfc78e2213f1b..a9d4dfec2b5a9350519ce4c4d68bb0f62839051f 100644
--- a/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/client/web/server/calculator/RowCalculatorTest.java
+++ b/openbis/sourceTest/java/ch/systemsx/cisd/openbis/generic/client/web/server/calculator/RowCalculatorTest.java
@@ -192,7 +192,7 @@ public class RowCalculatorTest extends AssertJUnit
         RowCalculator calculator =
                 createCalculator(parameters, "map(float, [${x},'  ',2,2.5,'3'])");
 
-        assertEquals("[0.0, -1.7976931348623157E308, 2.0, 2.5, 3.0]", calculator.evalAsString());
+        assertEquals("[0.0, NaN, 2.0, 2.5, 3.0]", calculator.evalAsString());
 
     }