diff --git a/src/test/miner_tests.cpp b/src/test/miner_tests.cpp
--- a/src/test/miner_tests.cpp
+++ b/src/test/miner_tests.cpp
@@ -89,11 +89,11 @@
     {2, 0xbbbeb305}, {2, 0xfe1c810a},
 };
 
-static CBlockIndex CreateBlockIndex(int nHeight)
+static CBlockIndex CreateBlockIndex(int nHeight, CBlockIndex *active_chain_tip)
     EXCLUSIVE_LOCKS_REQUIRED(cs_main) {
     CBlockIndex index;
     index.nHeight = nHeight;
-    index.pprev = ::ChainActive().Tip();
+    index.pprev = active_chain_tip;
     return index;
 }
 
@@ -516,10 +516,14 @@
 
     // Sequence locks fail.
     BOOST_CHECK(!TestSequenceLocks(CTransaction(tx), flags));
-    // Sequence locks pass on 2nd block.
-    BOOST_CHECK(
-        SequenceLocks(CTransaction(tx), flags, prevheights,
-                      CreateBlockIndex(::ChainActive().Tip()->nHeight + 2)));
+
+    {
+        CBlockIndex *active_chain_tip = m_node.chainman->ActiveChain().Tip();
+        // Sequence locks pass on 2nd block.
+        BOOST_CHECK(SequenceLocks(
+            CTransaction(tx), flags, prevheights,
+            CreateBlockIndex(active_chain_tip->nHeight + 2, active_chain_tip)));
+    }
 
     // Relative time locked.
     tx.vin[0].prevout = COutPoint(txFirst[1]->GetId(), 0);
@@ -545,15 +549,19 @@
 
     for (int i = 0; i < CBlockIndex::nMedianTimeSpan; i++) {
         // Trick the MedianTimePast.
-        ::ChainActive()
-            .Tip()
-            ->GetAncestor(::ChainActive().Tip()->nHeight - i)
+        m_node.chainman->ActiveTip()
+            ->GetAncestor(m_node.chainman->ActiveTip()->nHeight - i)
             ->nTime += 512;
     }
-    // Sequence locks pass 512 seconds later.
-    BOOST_CHECK(
-        SequenceLocks(CTransaction(tx), flags, prevheights,
-                      CreateBlockIndex(::ChainActive().Tip()->nHeight + 1)));
+
+    {
+        CBlockIndex *active_chain_tip = m_node.chainman->ActiveChain().Tip();
+        // Sequence locks pass 512 seconds later.
+        BOOST_CHECK(SequenceLocks(
+            CTransaction(tx), flags, prevheights,
+            CreateBlockIndex(active_chain_tip->nHeight + 1, active_chain_tip)));
+    }
+
     for (int i = 0; i < CBlockIndex::nMedianTimeSpan; i++) {
         // Undo tricked MTP.
         ::ChainActive()