diff --git a/test/functional/feature_taproot.py b/test/functional/feature_taproot.py
index dbe51f8f548..f6f6f3f78ba 100755
--- a/test/functional/feature_taproot.py
+++ b/test/functional/feature_taproot.py
@@ -1292,7 +1292,7 @@ class TaprootTest(BitcoinTestFramework):
         # It is not impossible to fit enough tapscript sigops to hit the old 80k limit without
         # busting txin-level limits. We simply have to account for the p2pk outputs in all
         # transactions.
-        extra_output_script = CScript([OP_CHECKSIG]*((MAX_BLOCK_SIGOPS_WEIGHT - sigops_weight) // WITNESS_SCALE_FACTOR))
+        extra_output_script = CScript(bytes([OP_CHECKSIG]*((MAX_BLOCK_SIGOPS_WEIGHT - sigops_weight) // WITNESS_SCALE_FACTOR)))
 
         coinbase_tx = create_coinbase(self.lastblockheight + 1, pubkey=cb_pubkey, extra_output_script=extra_output_script, fees=fees)
         block = create_block(self.tip, coinbase_tx, self.lastblocktime + 1, txlist=txs)