diff --git a/src/components/Activities/SubTask.jsx b/src/components/Activities/SubTask.jsx
index 2514f325..179495e2 100644
--- a/src/components/Activities/SubTask.jsx
+++ b/src/components/Activities/SubTask.jsx
@@ -168,7 +168,7 @@ const SubTask = ({ activity, onClose }) => {
           <input
             type="number"
             className="form-control form-control-sm"
-            {...register("plannedWork")}
+             {...register("plannedWork", { valueAsNumber: true })}
           />
           {errors.plannedWork && (
             <div className="danger-text">{errors.plannedWork.message}</div>