diff --git a/src/Common/Scheduler/Nodes/tests/gtest_custom_resource_manager.cpp b/src/Common/Scheduler/Nodes/tests/gtest_custom_resource_manager.cpp
index 495654d45ce..37432128606 100644
--- a/src/Common/Scheduler/Nodes/tests/gtest_custom_resource_manager.cpp
+++ b/src/Common/Scheduler/Nodes/tests/gtest_custom_resource_manager.cpp
@@ -31,21 +31,21 @@ TEST(SchedulerCustomResourceManager, Smoke)
         </clickhouse>
     )CONFIG");
 
-    ClassifierPtr cA = t.manager->acquire("A");
-    ClassifierPtr cB = t.manager->acquire("B");
+    ClassifierPtr c_a = t.manager->acquire("A");
+    ClassifierPtr c_b = t.manager->acquire("B");
 
     for (int i = 0; i < 10; i++)
     {
-        ResourceGuard gA(ResourceGuard::Metrics::getIOWrite(), cA->get("res1"), 1, ResourceGuard::Lock::Defer);
-        gA.lock();
-        gA.consume(1);
-        gA.unlock();
+        ResourceGuard g_a(ResourceGuard::Metrics::getIOWrite(), c_a->get("res1"), 1, ResourceGuard::Lock::Defer);
+        g_a.lock();
+        g_a.consume(1);
+        g_a.unlock();
 
-        ResourceGuard gB(ResourceGuard::Metrics::getIOWrite(), cB->get("res1"));
-        gB.unlock();
+        ResourceGuard g_b(ResourceGuard::Metrics::getIOWrite(), c_b->get("res1"));
+        g_b.unlock();
 
-        ResourceGuard gC(ResourceGuard::Metrics::getIORead(), cB->get("res1"));
-        gB.consume(2);
+        ResourceGuard g_c(ResourceGuard::Metrics::getIORead(), c_b->get("res1"));
+        g_b.consume(2);
     }
 }