diff --git a/esp_flasher/own_esptool.py b/esp_flasher/own_esptool.py
index dfaecfb..61fa655 100644
--- a/esp_flasher/own_esptool.py
+++ b/esp_flasher/own_esptool.py
@@ -390,7 +390,7 @@ def detect_chip(port=DEFAULT_PORT, baud=ESP_ROM_BAUD, connect_mode='default_rese
         detect_port.connect(connect_mode, connect_attempts, detecting=True)
 
         def check_if_stub(instance):
-            print(f" {instance.CHIP_NAME})
+            print(f" {instance.CHIP_NAME}")
             if detect_port.sync_stub_detected:
                 instance = instance.STUB_CLASS(instance)
                 instance.sync_stub_detected = True