diff --git a/app/build.gradle b/app/build.gradle
index bbcd73a2dbd9bc491415c03228ca914ccfa080ef..1199d2196bd3a135176605aef8e2f8066162a404 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -33,11 +33,25 @@ android {
         setProperty("archivesBaseName", "eDrive-$versionName")
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
+
+    signingConfigs {
+        debugConfig {
+            storeFile file("../keystore/platform.keystore")
+            storePassword 'android'
+            keyAlias 'platform'
+            keyPassword 'android'
+        }
+    }
+
     buildTypes {
         release {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
+
+        debug {
+            signingConfig signingConfigs.debugConfig
+        }
     }
 
 
diff --git a/app/src/main/java/foundation/e/drive/work/AccountUserInfoWorker.java b/app/src/main/java/foundation/e/drive/work/AccountUserInfoWorker.java
index d027aaac2c2ee5a116a603890e3bfa13e839fbdb..957d5eebe71c44406ef2e93dac95ff16b2597819 100644
--- a/app/src/main/java/foundation/e/drive/work/AccountUserInfoWorker.java
+++ b/app/src/main/java/foundation/e/drive/work/AccountUserInfoWorker.java
@@ -61,7 +61,6 @@ public class AccountUserInfoWorker extends Worker {
 
     private final Context mContext;
     private Account account;
-    private String userId;
 
     public AccountUserInfoWorker(@NonNull Context context, @NonNull WorkerParameters workerParams) {
         super(context, workerParams);
@@ -98,10 +97,10 @@ public class AccountUserInfoWorker extends Worker {
             final UserInfo userInfo = ocsResult.getResultData();
 
             if (accountManager.getUserData(account, ACCOUNT_USER_ID_KEY) == null) {
-                userId = userInfo.getId();
+                final String userId = userInfo.getId();
                 client.setUserId(userId);
                 AccountManager.get(mContext).setUserData(account, ACCOUNT_USER_ID_KEY, userId);
-                Log.v(TAG, "UserId "+userId+" saved for account");
+                Log.v(TAG, "UserId "+ userId +" saved for account");
             }
             final Quota userQuota = userInfo.getQuota();
             final double relativeQuota = userQuota.getRelative();
@@ -185,6 +184,7 @@ public class AccountUserInfoWorker extends Worker {
 
     private boolean fetchAliases() {
         final OwnCloudClient ocClient = DavClientProvider.getInstance().getClientInstance(account, mContext);
+        final String userId = accountManager.getUserData(account, ACCOUNT_USER_ID_KEY);
         final GetAliasOperation getAliasOperation = new GetAliasOperation(userId);
         final RemoteOperationResult<ArrayList<String>> ocsResult = getAliasOperation.execute(ocClient);
          String aliases = "";
diff --git a/keystore/platform.keystore b/keystore/platform.keystore
new file mode 100644
index 0000000000000000000000000000000000000000..574b2203d6dc78b3853cf899c3c7a1f60c773507
Binary files /dev/null and b/keystore/platform.keystore differ