diff --git a/src/validation.h b/src/validation.h
--- a/src/validation.h
+++ b/src/validation.h
@@ -371,11 +371,6 @@
  */
 uint64_t CalculateCurrentUsage();
 
-/**
- * Mark one block file as pruned.
- */
-void PruneOneBlockFile(const int fileNumber) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
-
 /**
  * Actually unlink the specified files
  */
@@ -1216,6 +1211,10 @@
     CChain &ValidatedChain() const { return ValidatedChainstate().m_chain; }
     CBlockIndex *ValidatedTip() const { return ValidatedChain().Tip(); }
 
+    //! Mark one block file as pruned (modify associated database entries)
+    void PruneOneBlockFile(const int fileNumber)
+        EXCLUSIVE_LOCKS_REQUIRED(cs_main);
+
     //! Load the block tree and coins database from disk, initializing state if
     //! we're running with -reindex
     bool LoadBlockIndex(const Consensus::Params &params)
diff --git a/src/validation.cpp b/src/validation.cpp
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -163,9 +163,11 @@
 std::unique_ptr<CBlockTreeDB> pblocktree;
 
 // See definition for documentation
-static void FindFilesToPruneManual(std::set<int> &setFilesToPrune,
+static void FindFilesToPruneManual(ChainstateManager &chainman,
+                                   std::set<int> &setFilesToPrune,
                                    int nManualPruneHeight);
-static void FindFilesToPrune(std::set<int> &setFilesToPrune,
+static void FindFilesToPrune(ChainstateManager &chainman,
+                             std::set<int> &setFilesToPrune,
                              uint64_t nPruneAfterHeight);
 static uint32_t GetNextBlockScriptFlags(const Consensus::Params &params,
                                         const CBlockIndex *pindex);
@@ -1935,9 +1937,10 @@
             if (fPruneMode && (fCheckForPruning || nManualPruneHeight > 0) &&
                 !fReindex) {
                 if (nManualPruneHeight > 0) {
-                    FindFilesToPruneManual(setFilesToPrune, nManualPruneHeight);
+                    FindFilesToPruneManual(g_chainman, setFilesToPrune,
+                                           nManualPruneHeight);
                 } else {
-                    FindFilesToPrune(setFilesToPrune,
+                    FindFilesToPrune(g_chainman, setFilesToPrune,
                                      chainparams.PruneAfterHeight());
                     fCheckForPruning = false;
                 }
@@ -4327,13 +4330,11 @@
     return retval;
 }
 
-/**
- * Prune a block file (modify associated database entries)
- */
-void PruneOneBlockFile(const int fileNumber) {
+void ChainstateManager::PruneOneBlockFile(const int fileNumber) {
+    AssertLockHeld(cs_main);
     LOCK(cs_LastBlockFile);
 
-    for (const auto &entry : g_chainman.BlockIndex()) {
+    for (const auto &entry : m_blockman.m_block_index) {
         CBlockIndex *pindex = entry.second;
         if (pindex->nFile == fileNumber) {
             pindex->nStatus = pindex->nStatus.withData(false).withUndo(false);
@@ -4346,14 +4347,14 @@
             // to be downloaded again in order to consider its chain, at which
             // point it would be considered as a candidate for
             // m_blocks_unlinked or setBlockIndexCandidates.
-            auto range = g_chainman.m_blockman.m_blocks_unlinked.equal_range(
-                pindex->pprev);
+            auto range =
+                m_blockman.m_blocks_unlinked.equal_range(pindex->pprev);
             while (range.first != range.second) {
                 std::multimap<CBlockIndex *, CBlockIndex *>::iterator _it =
                     range.first;
                 range.first++;
                 if (_it->second == pindex) {
-                    g_chainman.m_blockman.m_blocks_unlinked.erase(_it);
+                    m_blockman.m_blocks_unlinked.erase(_it);
                 }
             }
         }
@@ -4376,7 +4377,8 @@
  * Calculate the block/rev files to delete based on height specified by user
  * with RPC command pruneblockchain
  */
-static void FindFilesToPruneManual(std::set<int> &setFilesToPrune,
+static void FindFilesToPruneManual(ChainstateManager &chainman,
+                                   std::set<int> &setFilesToPrune,
                                    int nManualPruneHeight) {
     assert(fPruneMode && nManualPruneHeight > 0);
 
@@ -4396,7 +4398,7 @@
             vinfoBlockFile[fileNumber].nHeightLast > nLastBlockWeCanPrune) {
             continue;
         }
-        PruneOneBlockFile(fileNumber);
+        chainman.PruneOneBlockFile(fileNumber);
         setFilesToPrune.insert(fileNumber);
         count++;
     }
@@ -4436,7 +4438,8 @@
  * @param[out]   setFilesToPrune   The set of file indices that can be unlinked
  * will be returned
  */
-static void FindFilesToPrune(std::set<int> &setFilesToPrune,
+static void FindFilesToPrune(ChainstateManager &chainman,
+                             std::set<int> &setFilesToPrune,
                              uint64_t nPruneAfterHeight) {
     LOCK2(cs_main, cs_LastBlockFile);
     if (::ChainActive().Tip() == nullptr || nPruneTarget == 0) {
@@ -4486,7 +4489,7 @@
                 continue;
             }
 
-            PruneOneBlockFile(fileNumber);
+            chainman.PruneOneBlockFile(fileNumber);
             // Queue up the files for removal
             setFilesToPrune.insert(fileNumber);
             nCurrentUsage -= nBytesToPrune;
diff --git a/src/wallet/test/wallet_tests.cpp b/src/wallet/test/wallet_tests.cpp
--- a/src/wallet/test/wallet_tests.cpp
+++ b/src/wallet/test/wallet_tests.cpp
@@ -93,7 +93,7 @@
     // Prune the older block file.
     {
         LOCK(cs_main);
-        PruneOneBlockFile(oldTip->GetBlockPos().nFile);
+        EnsureChainman(m_node).PruneOneBlockFile(oldTip->GetBlockPos().nFile);
     }
     UnlinkPrunedFiles({oldTip->GetBlockPos().nFile});
 
@@ -123,7 +123,7 @@
     // Prune the remaining block file.
     {
         LOCK(cs_main);
-        PruneOneBlockFile(newTip->GetBlockPos().nFile);
+        EnsureChainman(m_node).PruneOneBlockFile(newTip->GetBlockPos().nFile);
     }
     UnlinkPrunedFiles({newTip->GetBlockPos().nFile});
 
@@ -163,7 +163,7 @@
     // Prune the older block file.
     {
         LOCK(cs_main);
-        PruneOneBlockFile(oldTip->GetBlockPos().nFile);
+        EnsureChainman(m_node).PruneOneBlockFile(oldTip->GetBlockPos().nFile);
     }
     UnlinkPrunedFiles({oldTip->GetBlockPos().nFile});