2 files changed, 2 insertions, 3 deletions
diff --git a/src/support/lockedpool.cpp b/src/support/lockedpool.cpp
index f17b539e09..b4f392116c 100644
--- a/src/support/lockedpool.cpp
+++ b/src/support/lockedpool.cpp
@@ -29,7 +29,6 @@
 #endif
 
 LockedPoolManager* LockedPoolManager::_instance = nullptr;
-std::once_flag LockedPoolManager::init_flag;
 
 /*******************************************************************************/
 // Utilities
diff --git a/src/support/lockedpool.h b/src/support/lockedpool.h
index de668f0773..b9e2e99d1a 100644
--- a/src/support/lockedpool.h
+++ b/src/support/lockedpool.h
@@ -221,7 +221,8 @@ public:
     /** Return the current instance, or create it once */
     static LockedPoolManager& Instance()
     {
-        std::call_once(LockedPoolManager::init_flag, LockedPoolManager::CreateInstance);
+        static std::once_flag init_flag;
+        std::call_once(init_flag, LockedPoolManager::CreateInstance);
         return *LockedPoolManager::_instance;
     }
 
@@ -234,7 +235,6 @@ private:
     static bool LockingFailed();
 
     static LockedPoolManager* _instance;
-    static std::once_flag init_flag;
 };
 
 #endif // BITCOIN_SUPPORT_LOCKEDPOOL_H