diff --git a/src/__init__.py b/src/__init__.py
index 915630123..a6b2ef3ca 100644
--- a/src/__init__.py
+++ b/src/__init__.py
@@ -17002,8 +17002,10 @@ def JM_quad_from_py(r):
         return mupdf.fz_quad_from_rect(JM_rect_from_py(r))
 
     for i in range(4):
+        if i >= len(r):
+            return q    # invalid: cancel the rest
         obj = r[i]  # next point item
-        if not obj.m_internal or not PySequence_Check(obj) or PySequence_Size(obj) != 2:
+        if not PySequence_Check(obj) or PySequence_Size(obj) != 2:
             return q    # invalid: cancel the rest
 
         p[i].x = JM_FLOAT_ITEM(obj, 0)
diff --git a/tests/resources/mupdf_explored.pdf b/tests/resources/mupdf_explored.pdf
new file mode 100644
index 000000000..6eff969bd
Binary files /dev/null and b/tests/resources/mupdf_explored.pdf differ
diff --git a/tests/test_annots.py b/tests/test_annots.py
index b82ba9ff5..419054866 100644
--- a/tests/test_annots.py
+++ b/tests/test_annots.py
@@ -224,3 +224,21 @@ def test_2270():
                 assert textBox.get_textbox(textBox.rect) == 'abc123'
                 assert textBox.info['content'] == 'abc123'
 
+def test_2934_add_redact_annot():
+    '''
+    Test fix for bug mentioned in #2934.
+    '''
+    path = os.path.abspath(f'{__file__}/../../tests/resources/mupdf_explored.pdf')
+    with open(path, 'rb') as f:
+        data = f.read()
+    doc = fitz.Document(stream=data)
+    print(f'Is PDF: {doc.is_pdf}')
+    print(f'Number of pages: {doc.page_count}')
+
+    import json
+    page=doc[0]
+    page_json_str =doc[0].get_text("json")
+    page_json_data = json.loads(page_json_str)
+    span=page_json_data.get("blocks")[0].get("lines")[0].get("spans")[0]
+    page.add_redact_annot(span["bbox"], text="")
+    page.apply_redactions()