diff --git a/test/functional/p2p_compactblocks.py b/test/functional/p2p_compactblocks.py
index 724a5874373..80041e2b59a 100755
--- a/test/functional/p2p_compactblocks.py
+++ b/test/functional/p2p_compactblocks.py
@@ -751,6 +751,13 @@ class CompactBlocksTest(BitcoinTestFramework):
         assert_not_equal(node.getbestblockhash(), block.hash_hex)
         test_node.sync_with_ping()
 
+        # Now, announcing a second block building on top of the invalid one will get us disconnected.
+        block.hashPrevBlock = block.hash_int
+        block.solve()
+        comp_block.initialize_from_block(block, prefill_list=list(range(len(block.vtx))), use_witness=True)
+        msg = msg_cmpctblock(comp_block.to_p2p())
+        test_node.send_await_disconnect(msg)
+
     # Helper for enabling cb announcements
     # Send the sendcmpct request and sync headers
     def request_cb_announcements(self, peer):
@@ -967,6 +974,9 @@ class CompactBlocksTest(BitcoinTestFramework):
         self.log.info("Testing handling of invalid compact blocks...")
         self.test_invalid_tx_in_compactblock(self.segwit_node)
 
+        # The previous test will lead to a disconnection. Reconnect before continuing.
+        self.segwit_node = self.nodes[0].add_p2p_connection(TestP2PConn())
+
         self.log.info("Testing invalid index in cmpctblock message...")
         self.test_invalid_cmpctblock_message()