diff --git a/tests/rest/test_job.py b/tests/rest/test_job.py
index ed0784334..6e04df082 100644
--- a/tests/rest/test_job.py
+++ b/tests/rest/test_job.py
@@ -719,7 +719,6 @@ def setup(*, job_id="jj1", assets: dict, media_type: str = "image/tiff; applicat
     return setup
 
 
-
 @pytest.fixture
 def job_with_1_asset(job_with_results_mocker) -> BatchJob:
     return job_with_results_mocker(job_id="jj1", assets={"1.tiff": "/dl/jjr1.tiff"})
@@ -734,8 +733,13 @@ def handle_content(request, context):
         assert search
         from_bytes = int(search.group(1))
         to_bytes = int(search.group(2))
-        assert from_bytes < to_bytes
-        return TIFF_CONTENT[from_bytes : to_bytes + 1]
+        assert from_bytes <= to_bytes
+        sliced_content = TIFF_CONTENT[from_bytes : to_bytes + 1]
+        context.status_code = 206
+        context.headers["Accept-Ranges"] = "bytes"
+        context.headers["Content-Range"] = f"bytes {from_bytes}-{to_bytes}/{len(TIFF_CONTENT)}"
+        context.headers["Content-Length"] = str(len(sliced_content))
+        return sliced_content
 
     requests_mock.get(
         API_URL + "/jobs/jj1/results",