diff --git a/src/main/java/eu/siacs/conversations/entities/Contact.java b/src/main/java/eu/siacs/conversations/entities/Contact.java
index ad264c792..f47fd2e3c 100644
--- a/src/main/java/eu/siacs/conversations/entities/Contact.java
+++ b/src/main/java/eu/siacs/conversations/entities/Contact.java
@@ -13,10 +13,13 @@ import org.json.JSONException;
 import org.json.JSONObject;
 
 import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Locale;
 
 import eu.siacs.conversations.Config;
+import eu.siacs.conversations.R;
 import eu.siacs.conversations.utils.JidHelper;
 import eu.siacs.conversations.utils.UIHelper;
 import eu.siacs.conversations.xml.Element;
@@ -143,7 +146,7 @@ public class Contact implements ListItem, Blockable {
 	@Override
 	public List<Tag> getTags(Context context) {
 		final ArrayList<Tag> tags = new ArrayList<>();
-		for (final String group : getGroups()) {
+		for (final String group : getGroups(true)) {
 			tags.add(new Tag(group, UIHelper.getColorForName(group)));
 		}
 		Presence.Status status = getShownStatus();
@@ -151,7 +154,7 @@ public class Contact implements ListItem, Blockable {
 			tags.add(UIHelper.getTagForStatus(context, status));
 		}
 		if (isBlocked()) {
-			tags.add(new Tag("blocked", 0xff2e2f3b));
+			tags.add(new Tag(context.getString(R.string.blocked), 0xff2e2f3b));
 		}
 		return tags;
 	}
@@ -281,8 +284,8 @@ public class Contact implements ListItem, Blockable {
 		this.systemAccount = account;
 	}
 
-	private List<String> getGroups() {
-		ArrayList<String> groups = new ArrayList<>();
+	private Collection<String> getGroups(final boolean unique) {
+		final Collection<String> groups = unique ? new HashSet<>() : new ArrayList<>();
 		for (int i = 0; i < this.groups.length(); ++i) {
 			try {
 				groups.add(this.groups.getString(i));
@@ -387,7 +390,7 @@ public class Contact implements ListItem, Blockable {
 		if (this.serverName != null) {
 			item.setAttribute("name", this.serverName);
 		}
-		for (String group : getGroups()) {
+		for (String group : getGroups(false)) {
 			item.addChild("group").setContent(group);
 		}
 		return item;
diff --git a/src/main/res/values/strings.xml b/src/main/res/values/strings.xml
index c5879d10a..155410ade 100644
--- a/src/main/res/values/strings.xml
+++ b/src/main/res/values/strings.xml
@@ -42,6 +42,7 @@
     <string name="block_domain_text">Block all contacts from %s?</string>
     <string name="unblock_domain_text">Unblock all contacts from %s?</string>
     <string name="contact_blocked">Contact blocked</string>
+    <string name="blocked">Blocked</string>
     <string name="remove_bookmark_text">Would you like to remove %s as a bookmark? The conversation associated with this bookmark will not be removed.</string>
     <string name="register_account">Register new account on server</string>
     <string name="change_password_on_server">Change password on server</string>