diff --git a/screening/source/java/ch/systemsx/cisd/openbis/plugin/screening/shared/basic/dto/WellContent.java b/screening/source/java/ch/systemsx/cisd/openbis/plugin/screening/shared/basic/dto/WellContent.java
index 170e6f2a239dbeb96f6a412cb44263f243766cff..de9a523d829594c3927578c373d4b811c11d6829 100644
--- a/screening/source/java/ch/systemsx/cisd/openbis/plugin/screening/shared/basic/dto/WellContent.java
+++ b/screening/source/java/ch/systemsx/cisd/openbis/plugin/screening/shared/basic/dto/WellContent.java
@@ -56,9 +56,11 @@ public class WellContent extends WellImage implements ISerializable
     // ------------ Dataset Data -------------
 
     // dataset which contains feature vectors for this well, null if images have not been analyzed
+    // or the information has not been loaded
     private DatasetReference featureVectorDatasetOrNull;
 
-    // Feature vector values, null if images have not been analyzed.
+    // Feature vector values, null if images have not been analyzed or the information has not been
+    // loaded
     private NamedFeatureVector featureVectorOrNull;
 
     // GWT only