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-rw-r--r--host/utils/usrp2_card_burner.py4
1 files changed, 2 insertions, 2 deletions
diff --git a/host/utils/usrp2_card_burner.py b/host/utils/usrp2_card_burner.py
index cb3cc53f6..f24fc4252 100644
--- a/host/utils/usrp2_card_burner.py
+++ b/host/utils/usrp2_card_burner.py
@@ -179,8 +179,8 @@ def write_image(image_file, device_file, offset):
img_data = open(image_file, 'rb').read()
count = int_ceil_div(len(img_data), SECTOR_SIZE)
pad_len = SECTOR_SIZE*count - len(img_data)
- pad_str = ''.join([chr(0)]*pad_len) #zero-padding
- open(tmp_file, 'wb').write(img_data + pad_str)
+ padding = bytes(b'\x00')*pad_len #zero-padding
+ open(tmp_file, 'wb').write(img_data + padding)
#execute a dd subprocess
verbose = command(