diff --git a/src/main/java/com/owncloud/android/ui/preview/PreviewMediaFragment.java b/src/main/java/com/owncloud/android/ui/preview/PreviewMediaFragment.java
index d6cba983b279..8265d939e392 100644
--- a/src/main/java/com/owncloud/android/ui/preview/PreviewMediaFragment.java
+++ b/src/main/java/com/owncloud/android/ui/preview/PreviewMediaFragment.java
@@ -83,7 +83,6 @@
 import androidx.annotation.NonNull;
 import androidx.annotation.StringRes;
 
-
 /**
  * This fragment shows a preview of a downloaded media file (audio or video).
  *
@@ -552,9 +551,9 @@ protected Uri doInBackground(String... fileId) {
 
         @Override
         protected void onPostExecute(Uri uri) {
-            PreviewMediaFragment previewMediaFragment = previewMediaFragmentWeakReference.get();
-
-            if (previewMediaFragment != null) {
+            final PreviewMediaFragment previewMediaFragment = previewMediaFragmentWeakReference.get();
+            final Context context = previewMediaFragment != null ? previewMediaFragment.getContext() : null;
+            if (previewMediaFragment != null && context != null) {
                 if (uri != null) {
                     previewMediaFragment.mVideoUri = uri;
                     previewMediaFragment.mVideoPreview.setVideoURI(uri);