diff --git a/test/functional/bip65-cltv-p2p.py b/test/functional/bip65-cltv-p2p.py
index 1d4fd8e3f3..52d46b6a0c 100755
--- a/test/functional/bip65-cltv-p2p.py
+++ b/test/functional/bip65-cltv-p2p.py
@@ -121,7 +121,7 @@ class BIP65Test(BitcoinTestFramework):
 
         # First we show that this tx is valid except for CLTV by getting it
         # rejected from the mempool for exactly that reason.
-        assert_raises_rpc_error(-26, '64: non-mandatory-script-verify-flag (Negative locktime)', self.nodes[0].sendrawtransaction, bytes_to_hex_str(spendtx.serialize()), True)
+        assert_raises_rpc_error(-26, 'non-mandatory-script-verify-flag (Negative locktime) (code 64)', self.nodes[0].sendrawtransaction, bytes_to_hex_str(spendtx.serialize()), True)
 
         # Now we verify that a block with this transaction is also invalid.
         block.vtx.append(spendtx)
diff --git a/test/functional/bipdersig-p2p.py b/test/functional/bipdersig-p2p.py
index e473b56574..b01e3afa3c 100755
--- a/test/functional/bipdersig-p2p.py
+++ b/test/functional/bipdersig-p2p.py
@@ -112,7 +112,7 @@ class BIP66Test(BitcoinTestFramework):
 
         # First we show that this tx is valid except for DERSIG by getting it
         # rejected from the mempool for exactly that reason.
-        assert_raises_rpc_error(-26, '64: non-mandatory-script-verify-flag (Non-canonical DER signature)', self.nodes[0].sendrawtransaction, bytes_to_hex_str(spendtx.serialize()), True)
+        assert_raises_rpc_error(-26, 'non-mandatory-script-verify-flag (Non-canonical DER signature) (code 64)', self.nodes[0].sendrawtransaction, bytes_to_hex_str(spendtx.serialize()), True)
 
         # Now we verify that a block with this transaction is also invalid.
         block.vtx.append(spendtx)