diff --git a/src/main/java/org/gcube/portlets/user/socialprofile/client/ui/DisplayProfile.java b/src/main/java/org/gcube/portlets/user/socialprofile/client/ui/DisplayProfile.java
index 48d30e1..0f0fdb0 100644
--- a/src/main/java/org/gcube/portlets/user/socialprofile/client/ui/DisplayProfile.java
+++ b/src/main/java/org/gcube/portlets/user/socialprofile/client/ui/DisplayProfile.java
@@ -273,6 +273,8 @@ public class DisplayProfile extends Composite {
 	 */
 	private String getUserToShowId() {
 		String encodedOid = Encoder.encode(GCubeSocialNetworking.USER_PROFILE_OID);
+		if (Window.Location.getParameter(encodedOid) == null)
+			return null;
 		String encodedUserId = Window.Location.getParameter(encodedOid);
 		return Encoder.decode(encodedUserId);
 	}