diff --git a/src/main/java/org/gcube/portlets/widgets/pickitem/client/dialog/PickItemsDialog.java b/src/main/java/org/gcube/portlets/widgets/pickitem/client/dialog/PickItemsDialog.java
index f2ed114..864a08d 100644
--- a/src/main/java/org/gcube/portlets/widgets/pickitem/client/dialog/PickItemsDialog.java
+++ b/src/main/java/org/gcube/portlets/widgets/pickitem/client/dialog/PickItemsDialog.java
@@ -153,12 +153,12 @@ public class PickItemsDialog extends PopupPanel {
 			hide();
 		}
 		else {
-			String last7 = (currText.length() > 7) ? currText.substring(currText.length()-7): currText;
-			if (last7.contains(triggerChar)) {
+			String last5 = (currText.length() > 5) ? currText.substring(currText.length()-5): currText;
+			if (last5.contains(triggerChar)) {
 				if (pickingUser(currText)) {
 					handleNonCharKeys(keyCode);
 				}
-			} else if (!last7.contains(triggerChar)) 
+			} else if (!last5.contains(triggerChar)) 
 				hide();
 		}
 	}