diff --git a/app/src/main/java/it/niedermann/owncloud/notes/persistence/CapabilitiesClient.java b/app/src/main/java/it/niedermann/owncloud/notes/persistence/CapabilitiesClient.java
index 8b8f79c413ea2f2a5673a36e6c3405e1b9ca50a5..700898b990dec95e69b1ed6b25e44c93ca5ed8aa 100644
--- a/app/src/main/java/it/niedermann/owncloud/notes/persistence/CapabilitiesClient.java
+++ b/app/src/main/java/it/niedermann/owncloud/notes/persistence/CapabilitiesClient.java
@@ -7,16 +7,9 @@ import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.annotation.WorkerThread;
 
-import com.nextcloud.android.sso.api.ParsedResponse;
 import com.nextcloud.android.sso.model.SingleSignOnAccount;
 
-import java.util.Map;
-
-import it.niedermann.owncloud.notes.persistence.sync.OcsAPI;
 import it.niedermann.owncloud.notes.shared.model.Capabilities;
-import it.niedermann.owncloud.notes.shared.model.OcsResponse;
-import it.niedermann.owncloud.notes.shared.model.OcsUser;
-import retrofit2.Response;
 
 @WorkerThread
 public class CapabilitiesClient {
@@ -53,7 +46,7 @@ public class CapabilitiesClient {
     public static String getDisplayName(@NonNull Context context, @NonNull SingleSignOnAccount ssoAccount, @NonNull ApiProvider apiProvider) {
         final var ocsAPI = apiProvider.getOcsAPI(context, ssoAccount);
         try {
-            final var userResponse = ocsAPI.getUser(ssoAccount.userId).execute();
+            final var userResponse = ocsAPI.getUser(sanitizeUserId(ssoAccount.userId)).execute();
             if (userResponse.isSuccessful()) {
                 final var ocsResponse = userResponse.body();
                 if (ocsResponse != null) {
@@ -69,4 +62,15 @@ public class CapabilitiesClient {
         }
         return null;
     }
+
+    @NonNull
+    private static String sanitizeUserId(@NonNull String userId) {
+        int endIndex = userId.lastIndexOf("@");
+
+        if (endIndex < 0) {
+            return userId;
+        }
+
+        return userId.substring(0, endIndex);
+    }
 }