diff --git a/app/src/main/java/app/grapheneos/pdfviewer/PdfViewer.java b/app/src/main/java/app/grapheneos/pdfviewer/PdfViewer.java
index 49dd35a8..c3f9567d 100644
--- a/app/src/main/java/app/grapheneos/pdfviewer/PdfViewer.java
+++ b/app/src/main/java/app/grapheneos/pdfviewer/PdfViewer.java
@@ -393,10 +393,14 @@ public void onZoomEnd() {
 
         final Intent intent = getIntent();
         if (Intent.ACTION_VIEW.equals(intent.getAction())) {
-            if (!"application/pdf".equals(intent.getType())) {
+            final String type = intent.getType();
+            if (!"application/pdf".equals(type) && (type != null)) {
                 snackbar.setText(R.string.invalid_mime_type).show();
                 return;
             }
+            if (type == null) {
+                Log.w(TAG, "MIME type is null, but we'll try to load it anyway");
+            }
             mUri = intent.getData();
             mPage = 1;
         }