diff --git a/src/org/linphone/ChatListFragment.java b/src/org/linphone/ChatListFragment.java
index 5c708f5dd..4e76f4843 100644
--- a/src/org/linphone/ChatListFragment.java
+++ b/src/org/linphone/ChatListFragment.java
@@ -239,7 +239,7 @@ public class ChatListFragment extends Fragment implements OnClickListener, OnIte
 			
 			TextView sipUri = (TextView) view.findViewById(R.id.sipUri);
 			
-			if (getResources().getBoolean(R.bool.only_display_username_if_unknown) && LinphoneUtils.isSipAddress(address.getDisplayName())) {
+			if (getResources().getBoolean(R.bool.only_display_username_if_unknown) && address.getDisplayName() != null && LinphoneUtils.isSipAddress(address.getDisplayName())) {
 				address.setDisplayName(LinphoneUtils.getUsernameFromAddress(address.getDisplayName()));
 			} else if (getResources().getBoolean(R.bool.only_display_username_if_unknown) && LinphoneUtils.isSipAddress(contact)) {
 				contact = LinphoneUtils.getUsernameFromAddress(contact);