diff --git a/packages/plugins/@nocobase/plugin-workflow-javascript/src/client/ScriptInstruction.tsx b/packages/plugins/@nocobase/plugin-workflow-javascript/src/client/ScriptInstruction.tsx
index 1f145fe6257..41ec6a9fb1b 100644
--- a/packages/plugins/@nocobase/plugin-workflow-javascript/src/client/ScriptInstruction.tsx
+++ b/packages/plugins/@nocobase/plugin-workflow-javascript/src/client/ScriptInstruction.tsx
@@ -14,6 +14,11 @@ import { ValueBlock } from '@nocobase/plugin-workflow/client';
 import { lang } from '../locale';
 
 export default class extends V2ScriptInstruction {
+  constructor() {
+    super();
+    this.bindTranslate(lang);
+  }
+
   useInitializers(node: { id: string | number; title?: string }): SchemaInitializerItemType {
     return {
       name: node.title ?? `#${node.id}`,
diff --git a/packages/plugins/@nocobase/plugin-workflow-javascript/src/client/__tests__/scriptCompatibility.test.ts b/packages/plugins/@nocobase/plugin-workflow-javascript/src/client/__tests__/scriptCompatibility.test.ts
index b47782533e0..a6ba15e69ae 100644
--- a/packages/plugins/@nocobase/plugin-workflow-javascript/src/client/__tests__/scriptCompatibility.test.ts
+++ b/packages/plugins/@nocobase/plugin-workflow-javascript/src/client/__tests__/scriptCompatibility.test.ts
@@ -9,6 +9,7 @@
 
 import { describe, expect, it } from 'vitest';
 
+import { PluginWorkflowScriptClient } from '../';
 import V1ScriptInstruction from '../ScriptInstruction';
 import { lang } from '../../locale';
 import V2ScriptInstruction from '../../client-v2/nodes/script';
@@ -34,4 +35,29 @@ describe('ScriptInstruction compatibility', () => {
       resultTitle: lang('Script result'),
     });
   });
+
+  it('registers the v1 instruction as a class to avoid cross-entry instanceof checks', async () => {
+    const calls: unknown[][] = [];
+    const plugin = Object.create(PluginWorkflowScriptClient.prototype) as PluginWorkflowScriptClient & {
+      app: {
+        pm: {
+          get: () => {
+            registerInstruction: (...args: unknown[]) => number;
+          };
+        };
+      };
+    };
+
+    plugin.app = {
+      pm: {
+        get: () => ({
+          registerInstruction: (...args: unknown[]) => calls.push(args),
+        }),
+      },
+    };
+
+    await plugin.load();
+
+    expect(calls).toEqual([['script', V1ScriptInstruction]]);
+  });
 });
diff --git a/packages/plugins/@nocobase/plugin-workflow-javascript/src/client/index.tsx b/packages/plugins/@nocobase/plugin-workflow-javascript/src/client/index.tsx
index 492bad97294..9ffaea89ae7 100644
--- a/packages/plugins/@nocobase/plugin-workflow-javascript/src/client/index.tsx
+++ b/packages/plugins/@nocobase/plugin-workflow-javascript/src/client/index.tsx
@@ -16,7 +16,7 @@ import { lang } from '../locale';
 export class PluginWorkflowScriptClient extends Plugin {
   async load() {
     const workflow = this.app.pm.get('workflow') as WorkflowPlugin;
-    workflow.registerInstruction('script', new ScriptInstruction().bindTranslate(lang));
+    workflow.registerInstruction('script', ScriptInstruction);
   }
 }