diff --git a/dolphinscheduler-server/src/test/java/org/apache/dolphinscheduler/server/master/runner/MasterTaskExecThreadTest.java b/dolphinscheduler-server/src/test/java/org/apache/dolphinscheduler/server/master/runner/MasterTaskExecThreadTest.java
index c1e58592e7..405ad435cc 100644
--- a/dolphinscheduler-server/src/test/java/org/apache/dolphinscheduler/server/master/runner/MasterTaskExecThreadTest.java
+++ b/dolphinscheduler-server/src/test/java/org/apache/dolphinscheduler/server/master/runner/MasterTaskExecThreadTest.java
@@ -57,7 +57,7 @@ public class MasterTaskExecThreadTest {
         this.zookeeperRegistryCenter = PowerMockito.mock(ZookeeperRegistryCenter.class);
         PowerMockito.when(SpringApplicationContext.getBean(ZookeeperRegistryCenter.class))
                 .thenReturn(this.zookeeperRegistryCenter);
-        this.masterTaskExecThread = new MasterTaskExecThread(null);
+        this.masterTaskExecThread = new MasterTaskExecThread(getTaskInstance());
     }
 
     @Test