diff --git a/barcode_server/notifier/serial.py b/barcode_server/notifier/serial.py
index 53d2500..0a17797 100644
--- a/barcode_server/notifier/serial.py
+++ b/barcode_server/notifier/serial.py
@@ -21,13 +21,13 @@ class SerialNotifier(BarcodeNotifier):
         self.usbA = serial.Serial(pathA, 9600, timeout=2)
         sleep.sleep(3);
         self.usbA.write(b'Initialize - A')
-        sleep.sleep(1);
+        sleep.sleep(2);
         self.usbA.write(b'1tInitialize - A')
         if pathB is not None:
             self.usbB = serial.Serial(pathB, 9600, timeout=2)
             sleep.sleep(3);
             self.usbB.write(b'Initialize - B')
-            sleep.sleep(1);
+            sleep.sleep(2);
             self.usbB.write(b'1tInitialize - B')
 
     @time(SERIAL_NOTIFIER_TIME)