diff --git a/src/main/java/eu/siacs/conversations/entities/MucOptions.java b/src/main/java/eu/siacs/conversations/entities/MucOptions.java
index 62777f194..a70c67198 100644
--- a/src/main/java/eu/siacs/conversations/entities/MucOptions.java
+++ b/src/main/java/eu/siacs/conversations/entities/MucOptions.java
@@ -426,12 +426,16 @@ public class MucOptions {
         } else if (!conversation.getJid().isBareJid()) {
             return conversation.getJid().getResource();
         } else {
-            final String displayName = normalize(account.getJid(), account.getDisplayName());
-            if (displayName == null) {
-                return JidHelper.localPartOrFallback(account.getJid());
-            } else {
-                return displayName;
-            }
+            return defaultNick(account);
+        }
+    }
+
+    public static String defaultNick(final Account account) {
+        final String displayName = normalize(account.getJid(), account.getDisplayName());
+        if (displayName == null) {
+            return JidHelper.localPartOrFallback(account.getJid());
+        } else {
+            return displayName;
         }
     }
 
diff --git a/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java b/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java
index ded2ab3c7..e18ae32fb 100644
--- a/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java
+++ b/src/main/java/eu/siacs/conversations/services/XmppConnectionService.java
@@ -2801,7 +2801,13 @@ public class XmppConnectionService extends Service {
 		final Bookmark bookmark = conversation.getBookmark();
 		final String bookmarkedNick = bookmark == null ? null : bookmark.getNick();
         if (bookmark != null && (tookProposedNickFromBookmark || TextUtils.isEmpty(bookmarkedNick)) && !full.getResource().equals(bookmarkedNick)) {
-            Log.d(Config.LOGTAG, conversation.getAccount().getJid().asBareJid() + ": persist nick '" + full.getResource() + "' into bookmark for " + conversation.getJid().asBareJid());
+            final Account account = conversation.getAccount();
+            final String defaultNick = MucOptions.defaultNick(account);
+            if (TextUtils.isEmpty(bookmarkedNick) && full.getResource().equals(defaultNick)) {
+                Log.d(Config.LOGTAG,account.getJid().asBareJid()+": do not overwrite empty bookmark nick with default nick for "+conversation.getJid().asBareJid());
+                return;
+            }
+            Log.d(Config.LOGTAG, account.getJid().asBareJid() + ": persist nick '" + full.getResource() + "' into bookmark for " + conversation.getJid().asBareJid());
             bookmark.setNick(full.getResource());
             pushBookmarks(bookmark.getAccount());
         }
@@ -4420,11 +4426,12 @@ public class XmppConnectionService extends Service {
 	}
 
 	public void saveConversationAsBookmark(Conversation conversation, String name) {
-		Account account = conversation.getAccount();
-		Bookmark bookmark = new Bookmark(account, conversation.getJid().asBareJid());
-		if (!conversation.getJid().isBareJid()) {
-			bookmark.setNick(conversation.getJid().getResource());
-		}
+		final Account account = conversation.getAccount();
+		final Bookmark bookmark = new Bookmark(account, conversation.getJid().asBareJid());
+		final String nick = conversation.getJid().getResource();
+        if (nick != null && !nick.isEmpty() && !nick.equals(MucOptions.defaultNick(account))) {
+            bookmark.setNick(nick);
+        }
 		if (!TextUtils.isEmpty(name)) {
 			bookmark.setBookmarkName(name);
 		}
diff --git a/src/main/java/eu/siacs/conversations/ui/StartConversationActivity.java b/src/main/java/eu/siacs/conversations/ui/StartConversationActivity.java
index a48dd230b..4de40206c 100644
--- a/src/main/java/eu/siacs/conversations/ui/StartConversationActivity.java
+++ b/src/main/java/eu/siacs/conversations/ui/StartConversationActivity.java
@@ -62,6 +62,7 @@ import eu.siacs.conversations.entities.Bookmark;
 import eu.siacs.conversations.entities.Contact;
 import eu.siacs.conversations.entities.Conversation;
 import eu.siacs.conversations.entities.ListItem;
+import eu.siacs.conversations.entities.MucOptions;
 import eu.siacs.conversations.entities.Presence;
 import eu.siacs.conversations.services.QuickConversationsService;
 import eu.siacs.conversations.services.XmppConnectionService;
@@ -1021,8 +1022,8 @@ public class StartConversationActivity extends XmppActivity implements XmppConne
 			} else {
 				final Bookmark bookmark = new Bookmark(account, conferenceJid.asBareJid());
 				bookmark.setAutojoin(getBooleanPreference("autojoin", R.bool.autojoin));
-				String nick = conferenceJid.getResource();
-				if (nick != null && !nick.isEmpty()) {
+				final String nick = conferenceJid.getResource();
+				if (nick != null && !nick.isEmpty() && !nick.equals(MucOptions.defaultNick(account))) {
 					bookmark.setNick(nick);
 				}
 				account.getBookmarks().add(bookmark);