diff --git a/examples/software_barcode.py b/examples/software_barcode.py
index 2fd3c18..9bbcc09 100644
--- a/examples/software_barcode.py
+++ b/examples/software_barcode.py
@@ -6,4 +6,4 @@ p = Usb(0x0416, 0x5011, profile="POS-5890")
 
 # Some software barcodes
 p.soft_barcode('code128', 'Hello')
-p.soft_barcode('code39', '123456')
+p.soft_barcode('code39', '1234')