diff --git a/bootstraps/bootstrap-core/src/main/java/com/navercorp/pinpoint/bootstrap/plugin/reactor/FluxAndMonoOperatorSubscribeInterceptor.java b/bootstraps/bootstrap-core/src/main/java/com/navercorp/pinpoint/bootstrap/plugin/reactor/FluxAndMonoOperatorSubscribeInterceptor.java
index 52ec1bcbee4b..3cdb649de708 100644
--- a/bootstraps/bootstrap-core/src/main/java/com/navercorp/pinpoint/bootstrap/plugin/reactor/FluxAndMonoOperatorSubscribeInterceptor.java
+++ b/bootstraps/bootstrap-core/src/main/java/com/navercorp/pinpoint/bootstrap/plugin/reactor/FluxAndMonoOperatorSubscribeInterceptor.java
@@ -32,15 +32,16 @@ public FluxAndMonoOperatorSubscribeInterceptor(TraceContext traceContext, Method
         this.serviceType = serviceType;
     }
 
+    // AsyncContext must exist in Target for tracking.
     public AsyncContext getAsyncContext(Object target, Object[] args) {
         if (checkTargetReactorContextAccessor(target, args)) {
-            return ReactorContextAccessorUtils.getAsyncContext(target);
+            return AsyncContextAccessorUtils.getAsyncContext(target);
         }
         if (checkTargetAsyncContextAccessor(target, args)) {
             return AsyncContextAccessorUtils.getAsyncContext(target);
         }
         if (checkSubscriberReactorContextAccessor(target, args)) {
-            return ReactorContextAccessorUtils.getAsyncContext(target);
+            return AsyncContextAccessorUtils.getAsyncContext(target);
         }
         return AsyncContextAccessorUtils.getAsyncContext(target);
     }
diff --git a/bootstraps/bootstrap-core/src/main/java/com/navercorp/pinpoint/bootstrap/plugin/reactor/FluxAndMonoSubscribeInterceptor.java b/bootstraps/bootstrap-core/src/main/java/com/navercorp/pinpoint/bootstrap/plugin/reactor/FluxAndMonoSubscribeInterceptor.java
index f5ca6c048bb0..44f12ff7f0e0 100644
--- a/bootstraps/bootstrap-core/src/main/java/com/navercorp/pinpoint/bootstrap/plugin/reactor/FluxAndMonoSubscribeInterceptor.java
+++ b/bootstraps/bootstrap-core/src/main/java/com/navercorp/pinpoint/bootstrap/plugin/reactor/FluxAndMonoSubscribeInterceptor.java
@@ -32,15 +32,16 @@ public FluxAndMonoSubscribeInterceptor(TraceContext traceContext, MethodDescript
         this.serviceType = serviceType;
     }
 
+    // AsyncContext must exist in Target for tracking.
     public AsyncContext getAsyncContext(Object target, Object[] args) {
         if (checkTargetReactorContextAccessor(target, args)) {
-            return ReactorContextAccessorUtils.getAsyncContext(target);
+            return AsyncContextAccessorUtils.getAsyncContext(target);
         }
         if (checkTargetAsyncContextAccessor(target, args)) {
             return AsyncContextAccessorUtils.getAsyncContext(target);
         }
         if (checkSubscriberReactorContextAccessor(target, args)) {
-            return ReactorContextAccessorUtils.getAsyncContext(target);
+            return AsyncContextAccessorUtils.getAsyncContext(target);
         }
         return AsyncContextAccessorUtils.getAsyncContext(target);
     }
diff --git a/plugins/reactor/src/test/java/com/navercorp/pinpoint/plugin/reactor/interceptor/FluxAndMonoOperatorSubscribeInterceptorTest.java b/plugins/reactor/src/test/java/com/navercorp/pinpoint/plugin/reactor/interceptor/FluxAndMonoOperatorSubscribeInterceptorTest.java
deleted file mode 100644
index e29dcc8b1069..000000000000
--- a/plugins/reactor/src/test/java/com/navercorp/pinpoint/plugin/reactor/interceptor/FluxAndMonoOperatorSubscribeInterceptorTest.java
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * Copyright 2020 NAVER Corp.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.navercorp.pinpoint.plugin.reactor.interceptor;
-
-import org.junit.Assert;
-import org.junit.Test;
-import org.mockito.Mockito;
-
-import com.navercorp.pinpoint.bootstrap.context.AsyncContext;
-import com.navercorp.pinpoint.bootstrap.context.MethodDescriptor;
-import com.navercorp.pinpoint.bootstrap.context.TraceContext;
-import com.navercorp.pinpoint.bootstrap.plugin.reactor.FluxAndMonoOperatorSubscribeInterceptor;
-import com.navercorp.pinpoint.bootstrap.plugin.reactor.FluxAndMonoSubscribeInterceptor;
-import com.navercorp.pinpoint.common.trace.ServiceType;
-import com.navercorp.pinpoint.plugin.reactor.interceptor.FluxAndMonoSubscribeInterceptorTest.MockTarget;
-
-public class FluxAndMonoOperatorSubscribeInterceptorTest {
-
-
-    @Test
-    public void getAsyncContextTest() {
-        final TraceContext mockContext = Mockito.mock(TraceContext.class);
-        final MethodDescriptor mockMethodDescriptor = Mockito.mock(MethodDescriptor.class);
-
-        final FluxAndMonoOperatorSubscribeInterceptor interceptor = new FluxAndMonoOperatorSubscribeInterceptor(mockContext, mockMethodDescriptor, ServiceType.INTERNAL_METHOD);
-
-        AsyncContext asyncContext = interceptor.getAsyncContext(new MockTarget(Mockito.mock(AsyncContext.class), null), new Object[0]);
-        Assert.assertNotNull(asyncContext);
-
-        asyncContext = interceptor.getAsyncContext(new MockTarget(null, Mockito.mock(AsyncContext.class)), new Object[0]);
-        Assert.assertNotNull(asyncContext);
-
-        Object[] args = {new MockTarget(null, Mockito.mock(AsyncContext.class))};
-        asyncContext = interceptor.getAsyncContext(new MockTarget(null, null), args);
-        Assert.assertNotNull(asyncContext);
-    }
-}
diff --git a/plugins/reactor/src/test/java/com/navercorp/pinpoint/plugin/reactor/interceptor/FluxAndMonoSubscribeInterceptorTest.java b/plugins/reactor/src/test/java/com/navercorp/pinpoint/plugin/reactor/interceptor/FluxAndMonoSubscribeInterceptorTest.java
deleted file mode 100644
index 0ff9724893fb..000000000000
--- a/plugins/reactor/src/test/java/com/navercorp/pinpoint/plugin/reactor/interceptor/FluxAndMonoSubscribeInterceptorTest.java
+++ /dev/null
@@ -1,84 +0,0 @@
-/*
- * Copyright 2020 NAVER Corp.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.navercorp.pinpoint.plugin.reactor.interceptor;
-
-import org.junit.Assert;
-import org.junit.Test;
-import org.mockito.Mockito;
-
-import com.navercorp.pinpoint.bootstrap.async.AsyncContextAccessor;
-import com.navercorp.pinpoint.bootstrap.context.AsyncContext;
-import com.navercorp.pinpoint.bootstrap.context.MethodDescriptor;
-import com.navercorp.pinpoint.bootstrap.context.TraceContext;
-import com.navercorp.pinpoint.bootstrap.plugin.reactor.FluxAndMonoSubscribeInterceptor;
-import com.navercorp.pinpoint.bootstrap.plugin.reactor.ReactorContextAccessor;
-import com.navercorp.pinpoint.common.trace.ServiceType;
-
-public class FluxAndMonoSubscribeInterceptorTest {
-
-    @Test
-    public void getAsyncContextTest() {
-        final TraceContext mockContext = Mockito.mock(TraceContext.class);
-        final MethodDescriptor mockMethodDescriptor = Mockito.mock(MethodDescriptor.class);
-
-        final FluxAndMonoSubscribeInterceptor interceptor = new FluxAndMonoSubscribeInterceptor(mockContext, mockMethodDescriptor, ServiceType.INTERNAL_METHOD);
-
-        AsyncContext asyncContext = interceptor.getAsyncContext(new MockTarget(Mockito.mock(AsyncContext.class), null), new Object[0]);
-        Assert.assertNotNull(asyncContext);
-
-
-        asyncContext = interceptor.getAsyncContext(new MockTarget(null, Mockito.mock(AsyncContext.class)), new Object[0]);
-        Assert.assertNotNull(asyncContext);
-
-
-        Object[] args = {new MockTarget(null, Mockito.mock(AsyncContext.class))};
-        asyncContext = interceptor.getAsyncContext(new MockTarget(null, null), args);
-        Assert.assertNotNull(asyncContext);
-    }
-
-    static class MockTarget implements AsyncContextAccessor, ReactorContextAccessor {
-
-        public MockTarget(AsyncContext asyncContext, AsyncContext reacctorAsyncContext) {
-            this.asyncContext = asyncContext;
-            this.reacctorAsyncContext = reacctorAsyncContext;
-        }
-
-        private AsyncContext asyncContext;
-        private AsyncContext reacctorAsyncContext;
-
-        @Override
-        public void _$PINPOINT$_setAsyncContext(AsyncContext asyncContext) {
-            this.asyncContext = asyncContext;
-        }
-
-        @Override
-        public AsyncContext _$PINPOINT$_getAsyncContext() {
-            return asyncContext;
-        }
-
-        @Override
-        public void _$PINPOINT$_setReactorContext(AsyncContext asyncContext) {
-            this.reacctorAsyncContext = asyncContext;
-        }
-
-        @Override
-        public AsyncContext _$PINPOINT$_getReactorContext() {
-            return reacctorAsyncContext;
-        }
-    }
-
-}