diff --git a/backend/app/api/routes/spoolman.py b/backend/app/api/routes/spoolman.py
index eeaf135b7..540ccfc6e 100644
--- a/backend/app/api/routes/spoolman.py
+++ b/backend/app/api/routes/spoolman.py
@@ -252,9 +252,7 @@ async def sync_printer_ams(
                 current_tray_uuids.add(spool_tag.upper())
 
             try:
-                sync_result = await client.sync_ams_tray(
-                    tray, printer.name, disable_weight_sync=disable_weight_sync
-                )
+                sync_result = await client.sync_ams_tray(tray, printer.name, disable_weight_sync=disable_weight_sync)
                 if sync_result:
                     synced += 1
                     logger.info(f"Synced {tray.tray_sub_brands} from {printer.name} AMS {ams_id} tray {tray.tray_id}")
@@ -387,7 +385,9 @@ async def sync_all_printers(
                     printer_tray_uuids[printer.name].add(spool_tag.upper())
 
                 try:
-                    sync_result = await client.sync_ams_tray(tray, printer.name, disable_weight_sync=disable_weight_sync)
+                    sync_result = await client.sync_ams_tray(
+                        tray, printer.name, disable_weight_sync=disable_weight_sync
+                    )
                     if sync_result:
                         total_synced += 1
                 except Exception as e:
diff --git a/backend/app/main.py b/backend/app/main.py
index 8d69c5e4d..a226e0569 100644
--- a/backend/app/main.py
+++ b/backend/app/main.py
@@ -556,9 +556,7 @@ async def _report_partial_spoolman_usage(printer_id: int, tracking, logger):
                     # Get spool identifier (prefer tray_uuid over tag_uid)
                     tray_uuid = tray_info.get("tray_uuid", "")
                     tag_uid = tray_info.get("tag_uid", "")
-                    spool_tag = (
-                        tray_uuid if tray_uuid and tray_uuid != "00000000000000000000000000000000" else tag_uid
-                    )
+                    spool_tag = tray_uuid if tray_uuid and tray_uuid != "00000000000000000000000000000000" else tag_uid
 
                     if not spool_tag:
                         logger.debug(f"[SPOOLMAN] Slot {slot_id}: no identifier for tray {global_tray_id}")
@@ -635,9 +633,7 @@ async def _report_partial_spoolman_usage(printer_id: int, tracking, logger):
             # Get spool identifier
             tray_uuid = tray_info.get("tray_uuid", "")
             tag_uid = tray_info.get("tag_uid", "")
-            spool_tag = (
-                tray_uuid if tray_uuid and tray_uuid != "00000000000000000000000000000000" else tag_uid
-            )
+            spool_tag = tray_uuid if tray_uuid and tray_uuid != "00000000000000000000000000000000" else tag_uid
 
             if not spool_tag:
                 continue
@@ -737,9 +733,7 @@ async def _report_spoolman_usage(printer_id: int, archive_id: int, logger):
             # Get spool identifier (prefer tray_uuid over tag_uid)
             tray_uuid = tray_info.get("tray_uuid", "")
             tag_uid = tray_info.get("tag_uid", "")
-            spool_tag = (
-                tray_uuid if tray_uuid and tray_uuid != "00000000000000000000000000000000" else tag_uid
-            )
+            spool_tag = tray_uuid if tray_uuid and tray_uuid != "00000000000000000000000000000000" else tag_uid
 
             if not spool_tag:
                 logger.debug(f"[SPOOLMAN] Slot {slot_id}: no identifier for tray {global_tray_id}")