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-rw-r--r--qa/rpc-tests/test_framework/blocktools.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/qa/rpc-tests/test_framework/blocktools.py b/qa/rpc-tests/test_framework/blocktools.py
index 425e6dcdde..afa0f5f9ba 100644
--- a/qa/rpc-tests/test_framework/blocktools.py
+++ b/qa/rpc-tests/test_framework/blocktools.py
@@ -29,7 +29,7 @@ def serialize_script_num(value):
neg = value < 0
absvalue = -value if neg else value
while (absvalue):
- r.append(chr(absvalue & 0xff))
+ r.append(int(absvalue & 0xff))
absvalue >>= 8
if r[-1] & 0x80:
r.append(0x80 if neg else 0)