diff --git a/backend/tests/integration/test_book.py b/backend/tests/integration/test_book.py
index 71a5073..dc74263 100644
--- a/backend/tests/integration/test_book.py
+++ b/backend/tests/integration/test_book.py
@@ -327,7 +327,7 @@ async def test_update_reading_progress(
 
     # Update progress
     progress_data = {
-        "progress": 0.5,
+        "percentage": 0.5,
     }
 
     response = await populated_authenticated_client.post(
@@ -343,7 +343,7 @@ async def test_update_reading_progress(
     assert response.status_code == 200
 
     book = response.json()
-    assert book["progress"]["progress"] == 0.5
+    assert book["progress"]["percentage"] == 0.5
 
 
 async def test_create_multiple_books_from_directory(