diff --git a/pom.xml b/pom.xml
index 17cf58a..080ba1b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -10,7 +10,7 @@
 
 	<groupId>org.gcube.portlets.user</groupId>
 	<artifactId>workspace-tree-widget</artifactId>
-	<version>6.24.0-SNAPSHOT</version>
+	<version>6.24.1-SNAPSHOT</version>
 	<name>gCube Workspace Tree Widget</name>
 	<description>
 		gCube Workspace Tree Widget is a widget to navigate and interact with gCube Workspace 
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 3bc7496..7e4dbaa 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
@@ -116,8 +116,8 @@ public class ConstantsExplorer {
 
 	public static final String FILEUPLOADHEADER = "File upload in: ";
 
-	public static final String REGEX_TO_WSITEM_NAME = "[^\\[\\]<>\\|?/*%$\\\\:]*$";
-	public static final String REGEX_TO_WSFOLDER_NAME = "[^\\[\\]<>\\|?/*%$\\\\:]*$";
+	public static final String REGEX_TO_WSITEM_NAME = "[^\\[\\]<>\\|?/*%$\\\\:–]*$";
+	public static final String REGEX_TO_WSFOLDER_NAME = "[^\\[\\]<>\\|?/*%$\\\\:–]*$";
 	public static final String REGEX_WSITEM_NAME_ALERT_MSG = "Field name must not contain: <>[]:\\|?/*%$ or contains / or \\";
 	public static final String REGEX_WSFOLDER_NAME_ALERT_MSG = "Folder name must not contain: <>[]:\\|?/*%$ or contains / or \\";