diff --git a/app/src/main/java/com/kunzisoft/keepass/fileselect/DeleteFileHistoryAsyncTask.kt b/app/src/main/java/com/kunzisoft/keepass/fileselect/DeleteFileHistoryAsyncTask.kt
index 2627e45dc..fb74bb11c 100644
--- a/app/src/main/java/com/kunzisoft/keepass/fileselect/DeleteFileHistoryAsyncTask.kt
+++ b/app/src/main/java/com/kunzisoft/keepass/fileselect/DeleteFileHistoryAsyncTask.kt
@@ -36,7 +36,7 @@ class DeleteFileHistoryAsyncTask(private val afterDeleteFileHistoryListener: (()
         return null
     }
 
-    override fun onPostExecute(v: Void) {
+    override fun onPostExecute(v: Void?) {
         adapter?.notifyDataSetChanged()
         if (adapter == null || adapter.itemCount == 0) {
             afterDeleteFileHistoryListener?.invoke()