diff --git a/qa/rpc-tests/test_framework/script.py b/qa/rpc-tests/test_framework/script.py
index ab7f4ec74..55a7f8e51 100644
--- a/qa/rpc-tests/test_framework/script.py
+++ b/qa/rpc-tests/test_framework/script.py
@@ -666,7 +666,7 @@ class CScript(bytes):
             else:
                 other = CScriptOp.encode_op_pushdata(bignum.bn2vch(other))
         elif isinstance(other, (bytes, bytearray)):
-            other = CScriptOp.encode_op_pushdata(other)
+            other = bytes(CScriptOp.encode_op_pushdata(other))
         return other
 
     def __add__(self, other):