diff --git a/src/main/java/org/gcube/portlets/widgets/wsexplorer/server/StringUtil.java b/src/main/java/org/gcube/portlets/widgets/wsexplorer/server/StringUtil.java
index bdbcdb5..a7bc2f5 100644
--- a/src/main/java/org/gcube/portlets/widgets/wsexplorer/server/StringUtil.java
+++ b/src/main/java/org/gcube/portlets/widgets/wsexplorer/server/StringUtil.java
@@ -14,7 +14,7 @@ public class StringUtil {
 	
 	public static String readableFileSize(long size) {
 		if(size < 0) return "Unknown";
-	    if(size == 0) return "Empty";
+	    if(size == 0) return "0";
 	    final String[] units = new String[] { "B", "KB", "MB", "GB", "TB" };
 	    int digitGroups = (int) (Math.log10(size)/Math.log10(1024));
 	    return new DecimalFormat("#,##0.#").format(size/Math.pow(1024, digitGroups))+units[digitGroups];