diff --git a/app/src/main/java/com/nextcloud/client/jobs/BackgroundJobManager.kt b/app/src/main/java/com/nextcloud/client/jobs/BackgroundJobManager.kt
index 6201f0439e..9290e2e4e6 100644
--- a/app/src/main/java/com/nextcloud/client/jobs/BackgroundJobManager.kt
+++ b/app/src/main/java/com/nextcloud/client/jobs/BackgroundJobManager.kt
@@ -127,7 +127,7 @@ interface BackgroundJobManager {
     fun startImmediateFilesSyncJob(
         syncedFolderID: Long,
         overridePowerSaving: Boolean = false,
-        changedFiles: Array<String> = arrayOf<String>()
+        changedFiles: Array<String?> = arrayOf<String?>()
     )
 
     fun cancelTwoWaySyncJob()
diff --git a/app/src/main/java/com/nextcloud/client/jobs/BackgroundJobManagerImpl.kt b/app/src/main/java/com/nextcloud/client/jobs/BackgroundJobManagerImpl.kt
index 7736098433..422d5a924c 100644
--- a/app/src/main/java/com/nextcloud/client/jobs/BackgroundJobManagerImpl.kt
+++ b/app/src/main/java/com/nextcloud/client/jobs/BackgroundJobManagerImpl.kt
@@ -481,7 +481,7 @@ internal class BackgroundJobManagerImpl(
     override fun startImmediateFilesSyncJob(
         syncedFolderID: Long,
         overridePowerSaving: Boolean,
-        changedFiles: Array<String>
+        changedFiles: Array<String?>
     ) {
         val arguments = Data.Builder()
             .putBoolean(FilesSyncWork.OVERRIDE_POWER_SAVING, overridePowerSaving)