diff --git a/src/validation.cpp b/src/validation.cpp
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -1047,6 +1047,13 @@
         pindexBestInvalid = pindexNew;
     }
 
+    // If the invalid chain found is supposed to be finalized, we need to move
+    // back the finalization point.
+    if (pindexFinalized &&
+        pindexFinalized->GetAncestor(pindexNew->nHeight) == pindexNew) {
+        pindexFinalized = pindexNew->pprev;
+    }
+
     LogPrintf(
         "%s: invalid block=%s  height=%d  log2_work=%.8g  date=%s\n", __func__,
         pindexNew->GetBlockHash().ToString(), pindexNew->nHeight,
@@ -2446,6 +2453,7 @@
                       pindexNew->GetBlockHash().ToString(),
                       pindexFinalized->nHeight);
             pindexNew->nStatus = pindexNew->nStatus.withFailed();
+            InvalidChainFound(pindexNew);
         }
 
         const CBlockIndex *pindexFork = chainActive.FindFork(pindexNew);
@@ -2986,6 +2994,12 @@
         pindexBestInvalid = nullptr;
     }
 
+    // In case we are reconsidering something before the finalization point,
+    // move the finalization point to the last common ancestor.
+    if (pindexFinalized) {
+        pindexFinalized = LastCommonAncestor(pindex, pindexFinalized);
+    }
+
     UpdateFlags(pindex, [](const BlockStatus status) {
         return status.withClearedFailureFlags();
     });
diff --git a/test/functional/abc-finalize-block.py b/test/functional/abc-finalize-block.py
--- a/test/functional/abc-finalize-block.py
+++ b/test/functional/abc-finalize-block.py
@@ -96,6 +96,11 @@
             "Finalize block is alt_node's tip!"
         assert_equal(node.getfinalizedblockhash(), finalized_block)
 
+        self.log.info(
+            "Make sure reconsidering block move the finalization point...")
+        node.reconsiderblock(alt_node.getbestblockhash())
+        assert_equal(node.getbestblockhash(), alt_node.getbestblockhash())
+
 
 if __name__ == '__main__':
     FinalizeBlockTest().main()