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-rw-r--r--tests/image-fuzzer/qcow2/layout.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/tests/image-fuzzer/qcow2/layout.py b/tests/image-fuzzer/qcow2/layout.py
index 675877da96..c57418fa15 100644
--- a/tests/image-fuzzer/qcow2/layout.py
+++ b/tests/image-fuzzer/qcow2/layout.py
@@ -503,7 +503,7 @@ class Image(object):
def write(self, filename):
"""Write an entire image to the file."""
- image_file = open(filename, 'w')
+ image_file = open(filename, 'wb')
for field in self:
image_file.seek(field.offset)
image_file.write(struct.pack(field.fmt, field.value))