diff --git a/Tests/test_file_jpeg.py b/Tests/test_file_jpeg.py
index f9c5fbc0b..c8981ce85 100644
--- a/Tests/test_file_jpeg.py
+++ b/Tests/test_file_jpeg.py
@@ -995,11 +995,13 @@ class TestFileJpeg:
         f = str(tmp_path / "temp.jpg")
         im = hopper()
         im.save(f, xmp=b"XMP test")
-
         with Image.open(f) as reloaded:
             assert reloaded.info["xmp"] == b"XMP test"
 
-        im.save(f, xmp=b"1" * 65504)
+        im.info["xmp"] = b"1" * 65504
+        im.save(f)
+        with Image.open(f) as reloaded:
+            assert reloaded.info["xmp"] == b"1" * 65504
 
         with pytest.raises(ValueError):
             im.save(f, xmp=b"1" * 65505)
diff --git a/src/PIL/JpegImagePlugin.py b/src/PIL/JpegImagePlugin.py
index 0cb50e0bf..723165ec4 100644
--- a/src/PIL/JpegImagePlugin.py
+++ b/src/PIL/JpegImagePlugin.py
@@ -747,7 +747,7 @@ def _save(im: Image.Image, fp: IO[bytes], filename: str | bytes) -> None:
     extra = info.get("extra", b"")
 
     MAX_BYTES_IN_MARKER = 65533
-    xmp = info.get("xmp")
+    xmp = info.get("xmp", im.info.get("xmp"))
     if xmp:
         overhead_len = 29  # b"http://ns.adobe.com/xap/1.0/\x00"
         max_data_bytes_in_marker = MAX_BYTES_IN_MARKER - overhead_len