diff --git a/packages/opencode/src/tool/task.ts b/packages/opencode/src/tool/task.ts
index fece68800b06..d3f5c70cd7e1 100644
--- a/packages/opencode/src/tool/task.ts
+++ b/packages/opencode/src/tool/task.ts
@@ -205,6 +205,7 @@ export const TaskTool = Tool.define(
             ...(next.permission.some((rule) => rule.permission === "todowrite") ? {} : { todowrite: false }),
             ...(next.permission.some((rule) => rule.permission === id) ? {} : { task: false }),
             ...Object.fromEntries((cfg.experimental?.primary_tools ?? []).map((item) => [item, false])),
+            plan_exit: false,
           },
           parts,
         })