diff --git a/src/openflexure_microscope_server/things/smart_scan.py b/src/openflexure_microscope_server/things/smart_scan.py
index 2d8578f6..43da4892 100644
--- a/src/openflexure_microscope_server/things/smart_scan.py
+++ b/src/openflexure_microscope_server/things/smart_scan.py
@@ -257,7 +257,7 @@ class SmartScanThing(Thing):
                 stitch_name = os.path.basename(stitched_image)
 
                 shutil.copy(
-                    stitched_image_path,
+                    stitched_image,
                     os.path.join(
                         self.dir_for_scan(self._ongoing_scan_name), stitch_name
                     ),