diff --git a/src/validation.cpp b/src/validation.cpp
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -2610,7 +2610,7 @@
                 InvalidBlockFound(pindexNew, state);
             }
 
-            return error("ConnectTip(): ConnectBlock %s failed (%s)",
+            return error("%s: ConnectBlock %s failed, %s", __func__,
                          pindexNew->GetBlockHash().ToString(),
                          FormatStateMessage(state));
         }
diff --git a/test/functional/feature_cltv.py b/test/functional/feature_cltv.py
--- a/test/functional/feature_cltv.py
+++ b/test/functional/feature_cltv.py
@@ -186,7 +186,7 @@
         block.hashMerkleRoot = block.calc_merkle_root()
         block.solve()
 
-        with self.nodes[0].assert_debug_log(expected_msgs=['ConnectBlock {} failed (blk-bad-inputs'.format(block.hash)]):
+        with self.nodes[0].assert_debug_log(expected_msgs=['ConnectBlock {} failed, blk-bad-inputs'.format(block.hash)]):
             self.nodes[0].p2p.send_and_ping(msg_block(block))
             assert_equal(self.nodes[0].getbestblockhash(), tip)
             self.nodes[0].p2p.sync_with_ping()
diff --git a/test/functional/feature_dersig.py b/test/functional/feature_dersig.py
--- a/test/functional/feature_dersig.py
+++ b/test/functional/feature_dersig.py
@@ -99,7 +99,7 @@
         block.rehash()
         block.solve()
 
-        with self.nodes[0].assert_debug_log(expected_msgs=['ConnectBlock {} failed (blk-bad-inputs'.format(block.hash)]):
+        with self.nodes[0].assert_debug_log(expected_msgs=['ConnectBlock {} failed, blk-bad-inputs'.format(block.hash)]):
             self.nodes[0].p2p.send_and_ping(msg_block(block))
             assert_equal(self.nodes[0].getbestblockhash(), tip)
             self.nodes[0].p2p.sync_with_ping()