diff --git a/src/main/webapp/WEB-INF/liferay-plugin-package.properties b/src/main/webapp/WEB-INF/liferay-plugin-package.properties
index 08cf7ee..f954efb 100644
--- a/src/main/webapp/WEB-INF/liferay-plugin-package.properties
+++ b/src/main/webapp/WEB-INF/liferay-plugin-package.properties
@@ -1,6 +1,6 @@
 name=social-dockbar-hook
 module-group-id=liferay
-module-incremental-version=2
+module-incremental-version=3
 tags=
 short-description=
 change-log=
diff --git a/src/main/webapp/custom_jsps/html/portlet/dockbar/custom_dockbar_view.jspf b/src/main/webapp/custom_jsps/html/portlet/dockbar/custom_dockbar_view.jspf
index 05be1b9..b038226 100644
--- a/src/main/webapp/custom_jsps/html/portlet/dockbar/custom_dockbar_view.jspf
+++ b/src/main/webapp/custom_jsps/html/portlet/dockbar/custom_dockbar_view.jspf
@@ -2,6 +2,8 @@
 <%@ page import="org.gcube.common.portal.PortalContext" %>
 
 <%
+// show the custom dockbar buttons only if the user is logged in, useless otherwise
+if (themeDisplay.isSignedIn()) {
 	PortalContext context = PortalContext.getConfiguration();
 	String groupName = context.getGatewayName(request);
 	String mySiteURL = context.getSiteLandingPagePath(request);
@@ -240,3 +242,4 @@
 	</c:otherwise>
 </c:choose>
 <!-- End When phone or tablet -->
+<% } %>
\ No newline at end of file