diff --git a/src/init.cpp b/src/init.cpp
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -118,7 +118,6 @@
 using node::CleanupBlockRevFiles;
 using node::DEFAULT_PERSIST_MEMPOOL;
 using node::DEFAULT_STOPAFTERBLOCKIMPORT;
-using node::fPruneMode;
 using node::fReindex;
 using node::LoadChainstate;
 using node::MempoolPath;
diff --git a/src/node/blockmanager_args.cpp b/src/node/blockmanager_args.cpp
--- a/src/node/blockmanager_args.cpp
+++ b/src/node/blockmanager_args.cpp
@@ -20,14 +20,12 @@
     // manual pruning: -prune=1
     if (nPruneArg == 1) {
         nPruneTarget = std::numeric_limits<uint64_t>::max();
-        fPruneMode = true;
     } else if (nPruneTarget) {
         if (nPruneTarget < MIN_DISK_SPACE_FOR_BLOCK_FILES) {
             return strprintf(_("Prune configured below the minimum of %d MiB.  "
                                "Please use a higher number."),
                              MIN_DISK_SPACE_FOR_BLOCK_FILES / 1024 / 1024);
         }
-        fPruneMode = true;
     }
     opts.prune_target = nPruneTarget;
 
diff --git a/src/node/blockstorage.h b/src/node/blockstorage.h
--- a/src/node/blockstorage.h
+++ b/src/node/blockstorage.h
@@ -50,7 +50,6 @@
 
 extern std::atomic_bool fImporting;
 extern std::atomic_bool fReindex;
-extern bool fPruneMode;
 
 // Because validation code takes pointers to the map's CBlockIndex objects, if
 // we ever switch to another associative container, we need to either use a
@@ -127,6 +126,8 @@
      */
     bool m_check_for_pruning = false;
 
+    const bool m_prune_mode;
+
     /** Dirty block index entries. */
     std::set<CBlockIndex *> m_dirty_blockindex;
 
@@ -138,7 +139,8 @@
 public:
     using Options = kernel::BlockManagerOpts;
 
-    explicit BlockManager(Options opts) : m_opts{std::move(opts)} {};
+    explicit BlockManager(Options opts)
+        : m_prune_mode{opts.prune_target > 0}, m_opts{std::move(opts)} {};
 
     BlockMap m_block_index GUARDED_BY(cs_main);
 
@@ -192,7 +194,7 @@
                                 const FlatFilePos *dbp);
 
     /** Whether running in -prune mode. */
-    [[nodiscard]] bool IsPruneMode() const { return fPruneMode; }
+    [[nodiscard]] bool IsPruneMode() const { return m_prune_mode; }
 
     /** Attempt to stay below this number of bytes of block files. */
     [[nodiscard]] uint64_t GetPruneTarget() const {
diff --git a/src/node/blockstorage.cpp b/src/node/blockstorage.cpp
--- a/src/node/blockstorage.cpp
+++ b/src/node/blockstorage.cpp
@@ -26,7 +26,6 @@
 namespace node {
 std::atomic_bool fImporting(false);
 std::atomic_bool fReindex(false);
-bool fPruneMode = false;
 
 static FILE *OpenUndoFile(const FlatFilePos &pos, bool fReadOnly = false);
 
@@ -132,7 +131,7 @@
 void BlockManager::FindFilesToPruneManual(std::set<int> &setFilesToPrune,
                                           int nManualPruneHeight,
                                           int chain_tip_height) {
-    assert(fPruneMode && nManualPruneHeight > 0);
+    assert(IsPruneMode() && nManualPruneHeight > 0);
 
     LOCK2(cs_main, cs_LastBlockFile);
     if (chain_tip_height < 0) {
@@ -644,7 +643,7 @@
             return AbortNode("Disk space is too low!",
                              _("Disk space is too low!"));
         }
-        if (bytes_allocated != 0 && fPruneMode) {
+        if (bytes_allocated != 0 && IsPruneMode()) {
             m_check_for_pruning = true;
         }
     }
@@ -670,7 +669,7 @@
         return AbortNode(state, "Disk space is too low!",
                          _("Disk space is too low!"));
     }
-    if (bytes_allocated != 0 && fPruneMode) {
+    if (bytes_allocated != 0 && IsPruneMode()) {
         m_check_for_pruning = true;
     }
 
diff --git a/src/test/util/setup_common.cpp b/src/test/util/setup_common.cpp
--- a/src/test/util/setup_common.cpp
+++ b/src/test/util/setup_common.cpp
@@ -61,7 +61,6 @@
 using node::ApplyArgsManOptions;
 using node::BlockAssembler;
 using node::CalculateCacheSizes;
-using node::fPruneMode;
 using node::fReindex;
 using node::LoadChainstate;
 using node::NodeContext;