diff --git a/api/ble.py b/api/ble.py
index 50c385e..945e3b4 100644
--- a/api/ble.py
+++ b/api/ble.py
@@ -236,7 +236,7 @@ def read_data_sync(mac: str) -> Optional[SensorReading]:
 def reset_adapter(big_reset = False):
     log.info("Restting BT Adapter...")
     if big_reset:
-        log.warning("Doing big reset - USB ID {current_usb_id}")
+        log.warning(f"Doing big reset - USB ID {current_usb_id}")
         log.info(subprocess.run(["usbreset", current_usb_id], capture_output=True, text=True, check=True).stdout.strip())
         time.sleep(2)
     else: