diff --git a/src/main/java/org/gcube/portlets/user/workspace/client/ConstantsExplorer.java b/src/main/java/org/gcube/portlets/user/workspace/client/ConstantsExplorer.java
index 47edf0d..030085f 100644
--- a/src/main/java/org/gcube/portlets/user/workspace/client/ConstantsExplorer.java
+++ b/src/main/java/org/gcube/portlets/user/workspace/client/ConstantsExplorer.java
@@ -191,7 +191,7 @@ public class ConstantsExplorer {
 	public static final String ACCOUNTING_HISTORY_OF = "Accounting history of: ";
 	public static final String ACCOUNTING_READERS_OF = "Accounting readers of: ";
 	
-	public static final NumberFormat numberFormatterKB = NumberFormat.getFormat("#.##0 KB;(#.##0 KB)");
+	public static final NumberFormat numberFormatterKB = NumberFormat.getFormat("#,##0 KB;(#,##0 KB)");
 
 	//USED IN HTTP GET AS PARAMETER.. THIS PARAMS ARE REPLICATED IN THE CONSTANTS OF TREE WIDGET
 	public static final String GET_SEARCH_PARAMETER ="search";