diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/columns/framework/AbstractColumnDefinition.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/columns/framework/AbstractColumnDefinition.java
index b489ba451d4ed09b4c51b3412b806db779d372b9..b49dd3eae7d7aab2686698fd133aef716487d8c0 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/columns/framework/AbstractColumnDefinition.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/columns/framework/AbstractColumnDefinition.java
@@ -32,7 +32,7 @@ public abstract class AbstractColumnDefinition<T> implements IColumnDefinitionUI
     private boolean isHidden;
 
     // GWT only
-    public AbstractColumnDefinition()
+    protected AbstractColumnDefinition()
     {
         this(null, 0, false);
     }
diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/columns/specific/GridCustomColumnDefinition.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/columns/specific/GridCustomColumnDefinition.java
index 28f147584f6a744eae95a1145288f6b9af65042a..376d87ddb46c10136ed150f95d328d51e21d1e9d 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/columns/specific/GridCustomColumnDefinition.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/application/ui/columns/specific/GridCustomColumnDefinition.java
@@ -88,19 +88,4 @@ public class GridCustomColumnDefinition<T> implements IColumnDefinitionUI<T>
     private GridCustomColumnDefinition()
     {
     }
-
-    // GWT only
-    @SuppressWarnings("unused")
-    private GridCustomColumnInfo getColumnMetadata()
-    {
-        return columnMetadata;
-    }
-
-    // GWT only
-    @SuppressWarnings("unused")
-    private void setColumnMetadata(GridCustomColumnInfo columnMetadata)
-    {
-        this.columnMetadata = columnMetadata;
-    }
-
 }
\ No newline at end of file
diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/dto/GridCustomColumnInfo.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/dto/GridCustomColumnInfo.java
index ac1960618ffdffee261f87ee4405f88b6bbde7af..b7108bdcd36a207a9953098bd54b17b439ed4c27 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/dto/GridCustomColumnInfo.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/client/web/client/dto/GridCustomColumnInfo.java
@@ -43,13 +43,6 @@ public class GridCustomColumnInfo implements IsSerializable
         return code;
     }
 
-    @SuppressWarnings("unused")
-    // GWT only
-    private void setCode(String code)
-    {
-        this.code = code;
-    }
-
     public String getLabel()
     {
         return label;
@@ -61,25 +54,11 @@ public class GridCustomColumnInfo implements IsSerializable
     {
     }
 
-    @SuppressWarnings("unused")
-    // GWT only
-    private void setLabel(String label)
-    {
-        this.label = label;
-    }
-
     public String getDescription()
     {
         return description;
     }
 
-    @SuppressWarnings("unused")
-    // GWT only
-    private void setDescription(String description)
-    {
-        this.description = description;
-    }
-
     @Override
     public boolean equals(Object obj)
     {
diff --git a/openbis/source/java/ch/systemsx/cisd/openbis/generic/shared/basic/GridRowModel.java b/openbis/source/java/ch/systemsx/cisd/openbis/generic/shared/basic/GridRowModel.java
index 6455a0250d9a7219f2624f73ff92dea54fd1d81f..9c1b5c9bf619b22083c1fe81cc13a3246abc49bd 100644
--- a/openbis/source/java/ch/systemsx/cisd/openbis/generic/shared/basic/GridRowModel.java
+++ b/openbis/source/java/ch/systemsx/cisd/openbis/generic/shared/basic/GridRowModel.java
@@ -71,13 +71,6 @@ public class GridRowModel<T> implements IsSerializable
         return calculatedColumnValues;
     }
 
-    // GWT only
-    @SuppressWarnings("unused")
-    private void setCalculatedColumnValues(List<GridCustomColumnValue> calculatedColumnValues)
-    {
-        this.calculatedColumnValues = calculatedColumnValues;
-    }
-
     public PrimitiveValue findColumnValue(String columnId)
     {
         for (GridCustomColumnValue value : calculatedColumnValues)