diff --git a/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/client/web/client/application/columns/InternalAbundanceColumnDefinition.java b/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/client/web/client/application/columns/InternalAbundanceColumnDefinition.java
index 242d34b1288d5ea0a5a496d318ce0e1cbe969c2b..2818489f0e525dc1ebdbc7eeb48fd9c5a40bf46b 100644
--- a/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/client/web/client/application/columns/InternalAbundanceColumnDefinition.java
+++ b/rtd_phosphonetx/source/java/ch/systemsx/cisd/openbis/plugin/phosphonetx/client/web/client/application/columns/InternalAbundanceColumnDefinition.java
@@ -24,7 +24,7 @@ import ch.systemsx.cisd.openbis.plugin.phosphonetx.shared.basic.dto.ProteinInfo;
 public final class InternalAbundanceColumnDefinition extends
         AbstractColumnDefinition<ProteinInfo>
 {
-    private static final Double ZERO = new Double(-1e-9);
+    private static final Double ZERO = new Double(1e-9);
     
     private long sampleID;