diff --git a/android/src/main/java/com/pdftron/reactnative/views/DocumentView.java b/android/src/main/java/com/pdftron/reactnative/views/DocumentView.java
index 93aa999c..b220ea0b 100644
--- a/android/src/main/java/com/pdftron/reactnative/views/DocumentView.java
+++ b/android/src/main/java/com/pdftron/reactnative/views/DocumentView.java
@@ -2280,6 +2280,10 @@ protected void onAttachedToWindow() {
         // TODO, update base64 when ViewerBuilder supports byte array
         Uri fileUri = ReactUtils.getUri(getContext(), mDocumentPath, mIsBase64, mBase64Extension);
 
+        if (mTempFiles == null) {
+            mTempFiles = new ArrayList<>();
+        }
+
         if (fileUri != null) {
             if (mIsBase64) {
                 mTempFiles.add(new File(fileUri.getPath()));