diff --git a/test/functional/p2p_mutated_blocks.py b/test/functional/p2p_mutated_blocks.py
index 737edaf5bf..9c7ea5f957 100755
--- a/test/functional/p2p_mutated_blocks.py
+++ b/test/functional/p2p_mutated_blocks.py
@@ -75,7 +75,7 @@ def self_transfer_requested():
         # Block at height 101 should be the only one in flight from peer 0
         peer_info_prior_to_attack = self.nodes[0].getpeerinfo()
         assert_equal(peer_info_prior_to_attack[0]['id'], 0)
-        assert_equal([101], peer_info_prior_to_attack[0]["inflight"])
+        assert_equal([2001], peer_info_prior_to_attack[0]["inflight"])
 
         # Attempt to clear the honest relayer's download request by sending the
         # mutated block (as the attacker).
@@ -88,7 +88,7 @@ def self_transfer_requested():
         # peer 0
         peer_info_after_attack = self.nodes[0].getpeerinfo()
         assert_equal(peer_info_after_attack[0]['id'], 0)
-        assert_equal([101], peer_info_after_attack[0]["inflight"])
+        assert_equal([2001], peer_info_after_attack[0]["inflight"])
 
         # The honest relayer should be able to complete relaying the block by
         # sending the blocktxn that was requested.
@@ -107,7 +107,7 @@ def self_transfer_requested():
         # Attacker gets a DoS score of 10, not immediately disconnected, so we do it 10 times to get to 100
         for _ in range(10):
             assert_equal(len(self.nodes[0].getpeerinfo()), 2)
-            with self.nodes[0].assert_debug_log(expected_msgs=["AcceptBlock FAILED (prev-blk-not-found)"]):
+            with self.nodes[0].assert_debug_log(expected_msgs=["has prev block not found"]):
                 attacker.send_message(msg_block(block_missing_prev))
         attacker.wait_for_disconnect(timeout=5)