diff --git a/src/main/java/com/gitee/jenkins/trigger/GiteePushTrigger.java b/src/main/java/com/gitee/jenkins/trigger/GiteePushTrigger.java
index 02664310aaea28c94eed1a40640bd803a4d3e5dd..86c67ab7e3ef13db18ed5dce204991545e11cde9 100644
--- a/src/main/java/com/gitee/jenkins/trigger/GiteePushTrigger.java
+++ b/src/main/java/com/gitee/jenkins/trigger/GiteePushTrigger.java
@@ -76,7 +76,7 @@ public class GiteePushTrigger extends Trigger<Job<?, ?>> {
     private boolean triggerOnNoteRequest = true;
     private String  noteRegex = "";
     private transient boolean ciSkip = true;
-    private BuildInstructionFilterType buildInstructionFilterType;
+    private BuildInstructionFilterType buildInstructionFilterType = BuildInstructionFilterType.NONE;
     private boolean skipWorkInProgressPullRequest;
     private boolean ciSkipFroTestNotRequired;
     private boolean skipLastCommitHasBeenBuild;
diff --git a/src/main/java/com/gitee/jenkins/trigger/handler/AbstractWebHookTriggerHandler.java b/src/main/java/com/gitee/jenkins/trigger/handler/AbstractWebHookTriggerHandler.java
index 158b5082e9502d8fdbbe2f6734c64399f263286d..d86220e97dcc4104b990a57a8bcab37dd2679848 100644
--- a/src/main/java/com/gitee/jenkins/trigger/handler/AbstractWebHookTriggerHandler.java
+++ b/src/main/java/com/gitee/jenkins/trigger/handler/AbstractWebHookTriggerHandler.java
@@ -8,9 +8,7 @@ import com.gitee.jenkins.trigger.filter.BranchFilter;
 import com.gitee.jenkins.trigger.filter.BuildInstructionFilter;
 import com.gitee.jenkins.trigger.filter.PullRequestLabelFilter;
 import com.gitee.jenkins.util.LoggerUtil;
-import hudson.model.Action;
-import hudson.model.CauseAction;
-import hudson.model.Job;
+import hudson.model.*;
 import hudson.plugins.git.GitSCM;
 import hudson.plugins.git.RevisionParameterAction;
 import hudson.scm.SCM;
@@ -19,7 +17,10 @@ import jenkins.triggers.SCMTriggerItem;
 import net.karneim.pojobuilder.GeneratePojoBuilder;
 import org.eclipse.jgit.transport.RemoteConfig;
 import org.eclipse.jgit.transport.URIish;
+import org.jenkinsci.plugins.workflow.job.WorkflowRun;
 
+import javax.servlet.ServletException;
+import java.io.IOException;
 import java.net.URISyntaxException;
 import java.util.ArrayList;
 import java.util.HashSet;
@@ -144,6 +145,20 @@ public abstract class AbstractWebHookTriggerHandler<H extends WebHook> implement
         return null;
     }
 
+    protected void doStop(Run<?, ?> build) throws IOException, ServletException {
+        if (build.isBuilding()) {
+            if (build instanceof AbstractBuild) {
+                ((AbstractBuild) build).doStop();
+                LOGGER.log(Level.WARNING, "Abort incomplete build");
+            } else if (build instanceof WorkflowRun) {
+                ((WorkflowRun) build).doStop();
+                LOGGER.log(Level.WARNING, "Abort incomplete build");
+            } else {
+                LOGGER.log(Level.WARNING, "Unable to abort incomplete build, build type not found: " + build.getClass().getName());
+            }
+        }
+    }
+
     public static class BuildStatusUpdate {
         private final Integer projectId;
         private final String sha;
diff --git a/src/main/java/com/gitee/jenkins/trigger/handler/note/NoteHookTriggerHandlerImpl.java b/src/main/java/com/gitee/jenkins/trigger/handler/note/NoteHookTriggerHandlerImpl.java
index 9dcdd3da0efc568a1eee98881bf235488167b467..22108c07d92695ac42b5b758e273c5bc307f8d2b 100644
--- a/src/main/java/com/gitee/jenkins/trigger/handler/note/NoteHookTriggerHandlerImpl.java
+++ b/src/main/java/com/gitee/jenkins/trigger/handler/note/NoteHookTriggerHandlerImpl.java
@@ -123,10 +123,7 @@ class NoteHookTriggerHandlerImpl extends AbstractWebHookTriggerHandler<NoteHook>
                 && causeData.getTargetRepoHttpUrl().equals(hook.getPullRequest().getTarget().getGitHttpUrl())
                 && causeData.getRef().equals(hook.getPullRequest().getMergeReferenceName())) {
                 try {
-                    if (build.isBuilding()) {
-                        ((AbstractBuild) build).doStop();
-                        LOGGER.log(Level.WARNING, "Abort incomplete build");
-                    }
+                    doStop(build);
                 } catch (ServletException | IOException e) {
                     LOGGER.log(Level.WARNING, "Unable to abort incomplete build", e);
                 }
diff --git a/src/main/java/com/gitee/jenkins/trigger/handler/pull/PullRequestHookTriggerHandlerImpl.java b/src/main/java/com/gitee/jenkins/trigger/handler/pull/PullRequestHookTriggerHandlerImpl.java
index a0b3fe9d9d54981949ee9583e77f1bade6ee5d5d..4899f892a3c0d4f762ee8dfe708d62ba9d5cb6c3 100644
--- a/src/main/java/com/gitee/jenkins/trigger/handler/pull/PullRequestHookTriggerHandlerImpl.java
+++ b/src/main/java/com/gitee/jenkins/trigger/handler/pull/PullRequestHookTriggerHandlerImpl.java
@@ -174,10 +174,7 @@ class PullRequestHookTriggerHandlerImpl extends AbstractWebHookTriggerHandler<Pu
                 && causeData.getTargetRepoHttpUrl().equals(hook.getPullRequest().getTarget().getGitHttpUrl())
                 && causeData.getRef().equals(hook.getPullRequest().getMergeReferenceName())) {
                 try {
-                    if (build.isBuilding()) {
-                        ((AbstractBuild) build).doStop();
-                        LOGGER.log(Level.WARNING, "Abort incomplete build");
-                    }
+                    doStop(build);
                 } catch (ServletException | IOException e) {
                     LOGGER.log(Level.WARNING, "Unable to abort incomplete build", e);
                 }