diff --git a/src/Common/MemoryTracker.cpp b/src/Common/MemoryTracker.cpp
index 50ddcb5a9eb..ad8647d6da4 100644
--- a/src/Common/MemoryTracker.cpp
+++ b/src/Common/MemoryTracker.cpp
@@ -15,7 +15,7 @@
 
 
 #ifdef MEMORY_TRACKER_DEBUG_CHECKS
-thread_local bool _memory_tracker_always_throw_logical_error_on_allocation = false;
+thread_local bool memory_tracker_always_throw_logical_error_on_allocation = false;
 #endif
 
 namespace
@@ -173,9 +173,9 @@ void MemoryTracker::allocImpl(Int64 size, bool throw_if_memory_exceeded)
     }
 
 #ifdef MEMORY_TRACKER_DEBUG_CHECKS
-    if (unlikely(_memory_tracker_always_throw_logical_error_on_allocation))
+    if (unlikely(memory_tracker_always_throw_logical_error_on_allocation))
     {
-        _memory_tracker_always_throw_logical_error_on_allocation = false;
+        memory_tracker_always_throw_logical_error_on_allocation = false;
         throw DB::Exception(DB::ErrorCodes::LOGICAL_ERROR, "Memory tracker: allocations not allowed.");
     }
 #endif
diff --git a/src/Common/MemoryTracker.h b/src/Common/MemoryTracker.h
index d87e922ef09..adba0b42f57 100644
--- a/src/Common/MemoryTracker.h
+++ b/src/Common/MemoryTracker.h
@@ -15,11 +15,11 @@
 /// DENY_ALLOCATIONS_IN_SCOPE in the inner scope. In Release builds these macros do nothing.
 #ifdef MEMORY_TRACKER_DEBUG_CHECKS
 #include <common/scope_guard.h>
-extern thread_local bool _memory_tracker_always_throw_logical_error_on_allocation;
+extern thread_local bool memory_tracker_always_throw_logical_error_on_allocation;
 #define ALLOCATIONS_IN_SCOPE_IMPL_CONCAT(n, val) \
-        bool _allocations_flag_prev_val##n = _memory_tracker_always_throw_logical_error_on_allocation; \
-        _memory_tracker_always_throw_logical_error_on_allocation = val; \
-        SCOPE_EXIT({ _memory_tracker_always_throw_logical_error_on_allocation = _allocations_flag_prev_val##n; })
+        bool _allocations_flag_prev_val##n = memory_tracker_always_throw_logical_error_on_allocation; \
+        memory_tracker_always_throw_logical_error_on_allocation = val; \
+        SCOPE_EXIT({ memory_tracker_always_throw_logical_error_on_allocation = _allocations_flag_prev_val##n; })
 #define ALLOCATIONS_IN_SCOPE_IMPL(n, val) ALLOCATIONS_IN_SCOPE_IMPL_CONCAT(n, val)
 #define DENY_ALLOCATIONS_IN_SCOPE ALLOCATIONS_IN_SCOPE_IMPL(__LINE__, true)
 #define ALLOW_ALLOCATIONS_IN_SCOPE ALLOCATIONS_IN_SCOPE_IMPL(__LINE__, false)